CN102629966A - Method, device and system for high speed fax machines to achieve low speed fax - Google Patents
Method, device and system for high speed fax machines to achieve low speed fax Download PDFInfo
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- CN102629966A CN102629966A CN2012100958897A CN201210095889A CN102629966A CN 102629966 A CN102629966 A CN 102629966A CN 2012100958897 A CN2012100958897 A CN 2012100958897A CN 201210095889 A CN201210095889 A CN 201210095889A CN 102629966 A CN102629966 A CN 102629966A
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Abstract
The embodiment of the invention discloses a method, a device and a system for high speed fax machines to achieve low speed fax, and relates to the communication field. The method, the device and the system which are used for sending faxes solve the problem of poor gateway performances caused by the constant detecting of core memory (CM) signals, and improve gateway performances. The method provided by the embodiment of the invention includes that a receiving-side gateway begins to detect the CM signals while detecting current quality parameters in a preset threshold, wherein the CM signals are sent by a high speed sending fax machine, and transmitted to a high speed receiving fax machine through a sending-side gateway and the receiving-side gateway; the receiving-side gateway detects the CM signals, determines that high speed fax business information exists in the CM signals, and intercepts the CM signals; receives low speed fax signals which are sent by the high speed receiving fax machine when the CM signals are not received by the receiving fax machine in the preset time; and performs low speed fax signal consultation with the sending-side gateway based on the low speed fax signal, and starts low speed fax after the consultation succeeds.
Description
Technical field
The present invention relates to communication field, relate in particular to method, equipment and system that high speed facsimile apparatus is realized the low speed fax.
Background technology
Gateway (Media Gate Way is called for short MGW), major function provides carries control and transfer resource, can be used between various network, transmitting data flow.Data flow mainly is meant the signal that data equipments such as Common Facsimile Machine, high speed facsimile apparatus, modem send in reciprocal process.The mode of gateway passes data flow mainly contains at present: the transparent transmission mode and the T.38 mode that is applicable to the low speed fax that are applicable to high-speed facsimile.The transparent transmission mode is meant the code encoding/decoding mode G.711 through ITU-T; Handle data flow as the encoding and decoding that common voice flow can't harm; But this mode receives the IP network influence of fluctuations bigger; When on IP network, occurring many packet losses with bigger shake, transmission quality can't be guaranteed.T.38 mode is meant the agreement T.38 through ITU-T, and the facsimile signal of following the ITU-TT.30 agreement of sending facsimile machine is converted into the T.38 facsimile message that is fit to the transmission of IP bearer network and carries out transmission manner.The advantage of this mode is because adopted the T.38 message of proper IP bearer network transmission that fax-traffic is transmitted, and is more intense to the defensive ability/resistance ability that occurs various damages on the IP network, improved the success rate and the stability of fax greatly; Shortcoming is to realize more complicated.So,, often high-speed facsimile is reduced to low speed fax back and sends in order to guarantee the quality of faxing.
Prior art is general to be adopted through gateway detection of call menu (Call Menu; Be called for short CM) signal; And will contain the CM signal intercept of high-speed facsimile service, and make high-speed facsimile reduce to the low speed fax, state high-speed facsimile in realization and reduce in the process of method of low speed fax; The inventor finds to have following defective at least: gateway carries out the CM input always; Not only reduce the service feature of gateway, and under the good situation of network quality, also high-speed facsimile is reduced to the low speed facsimile transmission, make facsimile posting complicated.
Summary of the invention
Embodiments of the invention provide a kind of high speed facsimile apparatus to realize method, equipment and the system of low speed fax; Through real-time detection network quality condition; And the time just begin to detect the CM signal for difference in the network quality condition; High-speed facsimile is reduced to the low speed fax, improved gate performance, realize that selecting to use high-speed facsimile flexibly according to network quality still is the low speed fax.
For achieving the above object, the technical scheme that the embodiment of the invention adopts is,
On the one hand, the embodiment of the invention provides a kind of high speed facsimile apparatus to realize the method for low speed fax, it is characterized in that, comprise,
When the receiver side gateway detects the current network mass parameter in predetermined threshold value the time, beginning detection of call menu CM signal, wherein, said CM signal sends by sending facsimile machine at a high speed, and sends the high speed machine of receiving faxes to through transmitter side gateway and receiver side gateway;
Detect said CM signal at said receiver side gateway, and after confirming to have high-speed facsimile service information in the said CM signal, tackle said CM signal;
Said receiver side gateway receives the low speed facsimile signal of sending when the said high speed machine of receiving faxes is not received said CM signal in Preset Time;
Said receiver side gateway carries out the negotiation of low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway, and the back starts the low speed fax consulting successfully.
On the one hand, the embodiment of the invention provides a kind of high speed facsimile apparatus to realize the receiver side gateway of low speed fax, it is characterized in that, comprising:
First detecting unit is used to detect the current network quality;
Second detecting unit; Be used for when said first detecting unit confirms that the current network mass parameter is in predetermined threshold value; Detection of call menu CM signal also confirms whether there is high-speed facsimile service information in the said CM signal; Wherein, said CM signal sends by sending facsimile machine at a high speed, and sends the machine of receiving faxes at a high speed to through transmitter side gateway and receiver side gateway;
Interception unit is used for after said second detecting unit confirms that there is high-speed facsimile service information in said CM signal, tackling said CM signal;
Receiving element is used to receive the low speed facsimile signal of sending when the said high speed machine of receiving faxes is not received said CM signal in Preset Time;
Negotiation element be used for carrying out the negotiation of low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway, and the back starts the low speed fax consulting successfully.
On the one hand, the embodiment of the invention provides a kind of high-speed facsimile to realize the network facsimile system of low speed fax, it is characterized in that; Comprise; Send the facsimile machine and the machine of receiving faxes at a high speed at a high speed, send the transmitter side gateway that facsimile machine is connected with said high speed, and the receiver side gateway that is connected with the said high speed machine of receiving faxes; Wherein
Said high speed is sent facsimile machine, is used to send call menu CM signal;
Said transmitter side gateway is used for the CM signal that said high speed transmission facsimile machine sends is sent to said receiver side gateway;
Said receiver side gateway; Be used for beginning to detect the CM signal when detecting the current network mass parameter in predetermined threshold value the time, and after confirming to have high-speed facsimile service information in the said CM signal; Tackle said CM signal; Receive the low speed facsimile signal of sending when the said high speed machine of receiving faxes is not received said CM signal in Preset Time, and carry out the low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway and consult, and fax consulting successfully back startup low speed;
The said high speed machine of receiving faxes is used to receive said CM signal, and sends the low speed facsimile signal when in Preset Time, not receiving said CM signal.
On the one hand, the embodiment of the invention provides another kind of high speed facsimile apparatus to realize the method for low speed fax, it is characterized in that, comprising:
When the transmitter side gateway detects the current network mass parameter in predetermined threshold value the time; Beginning detection of call menu CM signal; Wherein, said CM signal sends by sending facsimile machine at a high speed, and sends the machine of receiving faxes at a high speed to through said transmitter side gateway and receiver side gateway;
Detect said CM signal at said transmitter side gateway; And after confirming to have high-speed facsimile service information in the said CM signal; Tackle said CM signal; Send low speed facsimile signal to said receiver side gateway when machine is not received said CM signal in Preset Time so that said high speed is received faxes, and then make said receiver side gateway carry out the low speed facsimile signal to consult, and startup low speed is faxed after consulting successfully according to said low speed facsimile signal and said transmitter side gateway.
On the one hand, the embodiment of the invention provides a kind of high speed facsimile apparatus to realize the transmitter side gateway of low speed fax, it is characterized in that, comprising:
First detecting unit is used to detect the current network quality;
Second detecting unit; Be used for when said first detecting unit confirms that the current network mass parameter is in predetermined threshold value; Detect the CM signal and confirm and whether have high-speed facsimile service information in the said CM signal; Wherein, said CM signal sends by sending facsimile machine at a high speed, and sends the machine of receiving faxes at a high speed to through transmitter side gateway and receiver side gateway;
Interception unit; Be used for after said second detecting unit confirms that there is high-speed facsimile service information in said CM signal; Tackle said CM signal; Send low speed facsimile signal to said receiver side gateway when machine is not received said CM signal in Preset Time so that said high speed is received faxes, and then make said receiver side gateway carry out the low speed facsimile signal to consult, and startup low speed is faxed after consulting successfully according to said low speed facsimile signal and said transmitter side gateway.
On the one hand, the embodiment of the invention provides another kind of high-speed facsimile to realize the network facsimile system of low speed fax, it is characterized in that; Comprise; Send the facsimile machine and the machine of receiving faxes at a high speed at a high speed, send the transmitter side gateway that facsimile machine is connected with said high speed, and the receiver side gateway that is connected with the said high speed machine of receiving faxes; Wherein
Said high speed is sent facsimile machine, is used to send call menu CM signal;
Said transmitter side gateway; Be used for when detecting the current network mass parameter in predetermined threshold value the time; Begin to detect the CM signal; And after confirming to have high-speed facsimile service information in the said CM signal, tackle said CM signal, send low speed facsimile signal to said receiver side gateway when machine is not received said CM signal in Preset Time so that said high speed is received faxes;
Said receiver side gateway; Be used to receive and send the low speed facsimile signal when the said high speed machine of receiving faxes is not received said CM signal in Preset Time; And carry out the low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway and consult, and fax consulting successfully back startup low speed;
The said high speed machine of receiving faxes is used to receive said CM signal, and sends the low speed facsimile signal when in Preset Time, not receiving said CM signal.
The high speed facsimile apparatus that the embodiment of the invention provides is realized method, equipment and the system of low speed fax; Through real-time detection network quality condition; And when network quality parameters is in predetermined threshold value, just begin to detect the CM signal; High-speed facsimile is reduced to the low speed fax, improved gate performance, realize that selecting to use high-speed facsimile flexibly according to network quality still is the low speed fax.Solve gateway and carried out the CM input always, not only reduced the service feature of gateway, and under the good situation of network quality, also high-speed facsimile has been reduced to the low speed facsimile transmission, made the facsimile posting complicated problems.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
A kind of high speed facsimile apparatus that Fig. 1 provides for the embodiment of the invention is realized the method flow diagram of low speed fax;
The another kind of high speed facsimile apparatus that Fig. 2 provides for the embodiment of the invention is realized the method flow diagram of low speed fax;
A kind of high speed facsimile apparatus that Fig. 3 provides for the embodiment of the invention is realized the structure drawing of device of the receiver side gateway of low speed fax;
The another kind of high speed facsimile apparatus that Fig. 4 provides for the embodiment of the invention is realized the structure drawing of device of the receiver side gateway of low speed fax;
A kind of high speed facsimile apparatus that Fig. 5 provides for the embodiment of the invention is realized the structure drawing of device of the transmitter side gateway of low speed fax;
A kind of high-speed facsimile that Fig. 6 provides for the embodiment of the invention is realized the network facsimile system figure of low speed fax.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
In background technology, explain; The high-speed facsimile implementation method is simple, and transmission speed is fast, but network quality is required than higher; Low speed fax implementation method more complicated; But the success rate of under the situation of network quality difference, faxing is than higher, so high speed facsimile apparatus is realized simple fast fax and guaranteed that the method for fax success rate is under the good situation of network quality, to adopt the mode of high-speed facsimile; Under the situation of network quality difference, adopt the mode of low speed fax to fax, at first the process of low speed fax and high-speed facsimile is carried out simple declaration below.
Adopt the flow process of the low speed fax of T.38 form transmission to be generally; Send facsimile machine and send caller single-tone (Calling Tone; Being called for short CNG) signal is to initiate fax, and the machine of receiving faxes sends the low speed facsimile signal, and this low speed facsimile signal is specially V.21FLAG signal; V.21FLAG the transmission facsimile machine detects and sends response signal behind the signal, begins training afterwards and sends the fax page.
The basic procedure that high speed facsimile apparatus sends fax does; Send facsimile machine at a high speed and send caller single-tone CNG signal to initiate fax; As modulation answering tone (the Answer Amplitude Modulation that receives the machine feedback of receiving faxes at a high speed; Abbreviation ANSam) behind the signal, sends call menu (Call Menu is called for short CM) signal continuously.Machine examination is promptly sent continuous connection menu signal (Joint Menu is called for short JM) after measuring two complete CM signals if receive faxes at a high speed, sends facsimile machine at a high speed to getting into the process of training and fax after the JM signal response.
The embodiment of the invention detects network quality in real time through receiver side gateway or transmitter side gateway, and when network quality parameters was in predetermined threshold value, gateway got into the fax intervention states, and the detection and the interception of beginning CM signal force high-speed facsimile to reduce to the low speed fax.
Need to prove; Transmitter side gateway and receiver side gateway can be handled a plurality of fax incidents simultaneously respectively; Unique identification through each fax incident is given is distinguished; Distribute different physical resources to each fax incident again, transmitter side gateway and receiver side gateway are relatively independent to the processing of each fax incident, and be unaffected between each fax incident.The embodiment of the invention only describes to one of them fax incident.
A kind of high speed facsimile apparatus that the embodiment of the invention provides is realized the method for low speed fax; Be applied to fax through internet; As shown in Figure 6; Said fax through internet comprises at least sends at a high speed the facsimile machine 10 and the machine 20 of receiving faxes at a high speed, and sends facsimile machine 10, transmitter side gateway 30 and the receiver side gateway 40 that machine 20 is connected of receiving faxes at a high speed with said high speed respectively, wherein; Facsimile machine 10 and transmitter side gateway 30, the high speed machine 20 of receiving faxes that sends at a high speed is connected through PSTN respectively with receiver side gateway 40, and transmitter side gateway 30 and receiver side gateway 40 are connected through IP network.Referring to Fig. 1, this method comprises:
S101: when receiver side gateway 40 detects the current network quality in predetermined threshold value the time; Beginning detection of call menu CM signal; Wherein, said CM signal sends by sending facsimile machine 10 at a high speed, and sends the machine 20 of receiving faxes at a high speed to through transmitter side gateway 30 and receiver side gateway 40;
Explain the front; Both can select 30 pairs of network qualities of transmitter side gateway to detect in real time; And the CM signal detected and tackle, also can accomplish by receiver side gateway 40, preferred; 40 pairs of network qualities of present embodiment selective reception side gateway detect in real time, and the CM signal is detected and tackles.
The threshold value of receiver side gateway 40 preset network quality parameters; The value of predetermined threshold value can be definite according to the empirical value of industry prior art, and to real-time detection network quality parameters, wherein; Network quality parameters can comprise the data-bag lost rate, one or more in propagation delay time, the shake.Referring to table 1, be the threshold value of each parameter of the judgement network quality of present embodiment suggestion.Change if judge the threshold value of network quality parameters, embodiment can upgrade in time.
Table 1
| Sequence number | Network hierarchy | Propagation delay time (ms) | The data-bag lost rate | Shake (ms) |
| 1 | Well (suggestion) | ≤40 | ≤0.1％ | ≤10 |
| 2 | Difference | ≤100 | ≤1％ | ≤20 |
| 3 | Badly | ≤400 | ≤5％ | ≤60 |
Referring to table 2, be the transmission situation under the diverse network quality requirements.So network need not intervened facsimile negotiation when good situations, directly select the mode of transparent transmission for use; Network through intervening, uses T.38 transmission when the difference situation, improve success rate; Network does not need to intervene under abominable situation, and network is unavailable, generally all can fail.
Table 2
When receiver side gateway 40 detects the current network mass parameter in predetermined threshold value the time, confirm as the current network quality requirements for poor, receiver side gateway 40 gets into the fax intervention states, begins the detection of CM signal.Because it is bigger that detection CM signal takies the gateway hardware resource, so, with respect to detect the CM signal always, selectively carry out the performance that the CM input can improve gateway.
Below, the CM signal is carried out simple declaration.
Exemplary, in the present embodiment, sending facsimile machine 10 at a high speed and receive faxes machine 20 transmission CNG signals to initiate fax to high speed, transmitter side gateway 30 detects this CNG signal respectively with receiver side gateway 40, and sends to the machine 20 of receiving faxes at a high speed; The machine 20 of receiving faxes at a high speed sends the high-speed facsimile signal; Exemplary; This high-speed facsimile signal can be the ANSam signal, after receiver side gateway 40 detects the ANSam signals, on the one hand with this ANSam signal transparent transmission to network; On the one hand carry out media re-negotiation, become G.711 with coding/decoding negotiation between the transmitter side gateway 30 with transmitter side gateway 30; After receiver side gateway 40 detects the ANSam signal; With ANSam signal transparent transmission to transmitter side gateway 30; Transmitter side gateway 30 sends to high speed with the ANSam signal and sends facsimile machine 10, sends at a high speed to begin to send the CM signal continuously to network after facsimile machine 10 is received the ANSam signal, and transmitter side gateway 30 passes through IP network transparent transmission to receiver side gateway 40 with the CM signal; Wherein, Preferably, if transmitter side gateway 30 has the function that detects the CM signal, then close after its function that detects the CM signal CM signal transparent transmission to receiver side gateway 40; If transmitter side gateway 30 does not have the function that detects the CM signal, then directly with CM signal transparent transmission to receiver side gateway 40.
S102: detect said CM signal at said receiver side gateway 40, and after confirming to have high-speed facsimile service information in the said CM signal, tackle said CM signal;
Exemplary, V.21 receiver side gateway 40 can use the mode of (L) to detect and send the CM signal that facsimile machine 10 sends at a high speed, and analyzes in this CM signal whether have high-speed facsimile service information.The CM signal is the signal of (L) modulation V.21, uses the modulation system of FSK, and its carrier frequency centre frequency is 1080Hz, and bit0 uses the modulation of 1180Hz signal, and bit1 uses the modulation of 980Hz signal.Signal content is formed according to asynchronous system.Referring to table 3, be the composition sketch map of CM.Field in each square frame all is made up of the asynchronous mode data of 10 BIT.Preamble and synchronization are the synchronous marks of signal; Call funtion has comprised the information relevant with fax/MODEM; If the BIT content is 0,100 00,001 1 or 01,000 0,101 1 o'clock; Be expressed as facsimile service, if the BIT content is 0 1,000 0,011 1 o'clock, expression MODEM is professional.
Table 3
S103: said receiver side gateway 40 receives the low speed facsimile signal of sending when the said high speed machine of receiving faxes is not received said CM signal in Preset Time;
Exemplary; The low speed facsimile signal that the machine 20 of receiving faxes at a high speed sends when in Preset Time, not receiving said CM signal; For example; Preset Time can be set at and send 2-3 second behind the ANSam signal, and the low speed facsimile signal can be a signal V.21FLAG, and receiver side gateway 40 can detect whether there is the V.21FLAG signal of form through the mode of (H) V.21.
S104: said receiver side gateway 40 carries out the negotiation of low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway 30, and the back starts low speed fax flow process consulting successfully.
The mode that receiver side gateway 40 is held consultation generally need be configured in advance; For example can selection of configuration form T.38 or mode G.711; If receiver side gateway 40 detects the low speed facsimile signal, signal V.21FLAG for example, but the preferred negotiation mode of configuration is a mode G.711; Then the low speed facsimile negotiation can not be carried out, and then when the network quality difference, fax can not be successfully sent.So receiver side gateway 40 is under the fax intervention states, T.38 the configuration item conductively-closed of receiver side gateway 40 if confirm to exist V.21FLAG signal, directly selects form to hold consultation, and improves the success rate of fax.
The process of concrete negotiation comprises:
The high speed facsimile apparatus that the embodiment of the invention provides is realized the method for low speed fax; Through real-time detection network quality condition; And when network quality parameters is in predetermined threshold value, just begin to detect the CM signal; High-speed facsimile is reduced to the low speed fax, improved gate performance, realize that selecting to use high-speed facsimile flexibly according to network quality still is the low speed fax.Solve gateway and carried out the CM input always, not only reduced the service feature of gateway, and under the good situation of network quality, also high-speed facsimile has been reduced to the low speed facsimile transmission, made the facsimile posting complicated problems.
The another kind of high speed facsimile apparatus that the present invention implements to provide is realized the method for low speed fax; Also be applied to network facsimile system figure shown in Figure 6; The principle of the method for embodiment is identical with the foregoing description method; Different is utilizes transmitter side gateway 30 to detect network qualities in real time, and begins the CM input in network quality parameters during in predetermined threshold value, and present embodiment only describes different places.Referring to Fig. 2, this method comprises,
S201: when transmitter side gateway 50 detects the current network mass parameter in predetermined threshold value the time; Beginning detection of call menu CM signal; Wherein, said CM signal sends by sending facsimile machine 10 at a high speed, and sends to the machine 20 of receiving faxes at a high speed through transmitter side gateway 30 and receiver side gateway 40;
The detection method of network quality and determination methods and purpose be with aforementioned embodiment, sends process that facsimile machine sends the CM signal at a high speed also with aforementioned embodiment, so locate to repeat no more.Different is, the CM signal directly is sent to transmitter side gateway 30 after sending facsimile machine at a high speed and sending, and 30 pairs of CM signals of transmitter side gateway detect, no longer with CM signal transparent transmission to receiver side gateway 40.
S202: detect said CM signal at said transmitter side gateway, and after confirming to have high-speed facsimile service information in the said CM signal, tackle said CM signal; Send low speed facsimile signal to said receiver side gateway 40 when machine is not received said CM signal in Preset Time so that said high speed is received faxes; And then make said receiver side gateway carry out the negotiation of low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway 30, and the back starts the low speed fax consulting successfully.
Transmitter side gateway 30 detects said CM signals and judges the method that has or not high-speed facsimile service with aforementioned embodiment, transmitter side gateway 30 with the CM signal intercept after, the machine 20 of receiving faxes at a high speed can not receive the CM signal equally or can not receive complete CM signal; So the machine 20 of receiving faxes at a high speed sends the low speed facsimile signal, is specially V.21FLAG signal; To receiver side gateway 40, in like manner, the mode that receiver side gateway 40 is held consultation generally need be configured in advance; For example can selection of configuration form T.38 or mode G.711; If receiver side gateway 40 detects the low speed facsimile signal, signal V.21FLAG for example, but the preferred negotiation mode of configuration is a mode G.711; Then the low speed facsimile negotiation can not be carried out, and then when the network quality difference, fax can not be successfully sent.So exemplary, receiver side gateway 40 is under the fax intervention states; T.38 the configuration item conductively-closed of receiver side gateway 40 if confirm to exist V.21FLAG signal, directly selects form to hold consultation; And consulting successfully back startup low speed fax flow process, improve the success rate of fax.Concrete negotiations process is identical with previous embodiment, so locate to repeat no more.Exemplary; The mode that receiver side gateway 40 gets into the fax intervention states has: detect network quality in real time by transmitter side gateway 30; And when network quality parameters is in predetermined threshold value notice receiver side gateway 40; So that receiver side gateway 40 gets into the fax intervention states, perhaps detect network quality in real time, and when network quality parameters is in predetermined threshold value, get into the fax intervention states by receiver side gateway 40.
The high speed facsimile apparatus that the embodiment of the invention provides is realized the method for low speed fax; Through real-time detection network quality condition; And when network quality parameters is in predetermined threshold value, just begin to detect the CM signal; High-speed facsimile is reduced to the low speed fax, improved gate performance, realize that selecting to use high-speed facsimile flexibly according to network quality still is the low speed fax.Solve gateway and carried out the CM input always, not only reduced the service feature of gateway, and under the good situation of network quality, also high-speed facsimile has been reduced to the low speed facsimile transmission, made the facsimile posting complicated problems.
On the one hand, the embodiment of the invention provides a kind of high speed facsimile apparatus to realize the receiver side gateway 40 of low speed fax, is applied to method shown in Figure 1, and referring to Fig. 3, this receiver side gateway 40 comprises,
First detecting unit 401 is used to detect the current network quality;
Exemplary; The threshold value of receiver side gateway 40 preset network quality parameters; The value of predetermined threshold value can be definite according to the empirical value of industry prior art, and to real-time detection network quality parameters, wherein; Network quality parameters can comprise the data-bag lost rate, one or more in propagation delay time, the shake.Referring to table 1, be the threshold value of each parameter of the judgement network quality of present embodiment suggestion.Change if judge the parameter threshold of network quality, embodiment can upgrade in time.
Second detecting unit 402; Be used for when said first detecting unit confirms that the current network mass parameter is in predetermined threshold value; Detect the CM signal and confirm and whether have high-speed facsimile service information in the said CM signal; Wherein, said CM signal sends out by sending facsimile machine at a high speed, and sends the machine of receiving faxes at a high speed to through transmitter side gateway and receiver side gateway;
Exemplary, V.21 receiver side gateway 40 can use the mode of (L) to detect and send the CM signal that facsimile machine sends at a high speed, and analyzes in this CM signal whether have high-speed facsimile service information.The CM signal is the signal of (L) modulation V.21, uses the modulation system of F SK, and its carrier frequency centre frequency is 1080Hz, and bit0 uses the modulation of 1180Hz signal, and bit1 uses the modulation of 980Hz signal.Signal content is formed according to asynchronous system.Referring to table 3, be the composition sketch map of CM.Field in each square frame all is made up of the asynchronous mode data of 10 BIT.Preamble and synchronization are the synchronous marks of signal; Call funtion has comprised the information relevant with fax/MODEM; If the BIT content is 01,000 0,001 1 or 01,000 0,101 1 o'clock; Be expressed as facsimile service, if the BIT content is 0 1,000 0,011 1 o'clock, expression MODEM is professional.
Exemplary, receiver side gateway 40 no longer sends to the machine of receiving faxes at a high speed with the content of CM signal from moment of interception behind broadband side interception CM signal; So; The machine of receiving faxes can not receive the CM signal at a high speed, perhaps can not receive intactly CM signal, after transmission ANSam signal is overtime; Begin to send V.21FLAG, send digital identification signal then.
Receiving element 404 is used to receive the low speed facsimile signal of sending when the machine of receiving faxes is not at a high speed received said CM signal in Preset Time;
Exemplary, as to send when the machine of receiving faxes is not received said CM signal in Preset Time at a high speed low speed facsimile signal, for example, Preset Time can be set at and send 2-3 second behind the ANSam signal, and the low speed facsimile signal can be a signal V.21FLAG.Receiver side gateway 40 can detect whether there is the V.21FLAG signal of form through the mode of (H) V.21.
Further, referring to Fig. 4, said negotiation element 405 comprises,
Sending module 4051 is used for sending coding/decoding negotiation to said transmitter side gateway and becomes agreement request T.38;
Said second detecting unit 402 also is used for after said interception unit is with said CM signal intercept, and after detecting non-CM signal, stops to detect said CM signal.
Said receiver side gateway 40 also comprises storage element 406; Be used to store said network quality parameters; Said network quality parameters comprises the data-bag lost rate, one or more in propagation delay time, the shake, and the value of the predetermined threshold value of said network parameter can be confirmed according to the empirical value of industry prior art; Referring to table 1, can for:
The data-bag lost rate is greater than 0.1% and smaller or equal to 1.0%;
The individual event time delay is greater than 40ms and smaller or equal to 100ms;
Shake is greater than 10ms and smaller or equal to 20ms.
Change if judge the parameter threshold of network quality, embodiment can upgrade in time.
The high speed facsimile apparatus that the embodiment of the invention provides is realized the receiver side gateway of low speed fax; Through real-time detection network quality condition; And when network quality parameters is in predetermined threshold value, just begin to detect the CM signal; High-speed facsimile is reduced to the low speed fax, improved gate performance, realize that selecting to use high-speed facsimile flexibly according to network quality still is the low speed fax.Solve gateway and carried out the CM input always, not only reduced the service feature of gateway, and under the good situation of network quality, also high-speed facsimile has been reduced to the low speed facsimile transmission, made the facsimile posting complicated problems.
On the one hand, the embodiment of the invention provides a kind of high speed facsimile apparatus to realize the transmitter side gateway 30 of low speed fax, is applied to method shown in Figure 2, and referring to Fig. 5, this transmitter side gateway 30 comprises,
First detecting unit 301 is used to detect the current network quality;
Exemplary, network quality parameters can comprise the data-bag lost rate, one or more in propagation delay time, the shake, and the method that detects network quality is with above-mentioned embodiment.
Second detecting unit 302; Be used for when said first detecting unit confirms that the current network mass parameter is in predetermined threshold value; Detect the CM signal and confirm and whether have high-speed facsimile service information in the said CM signal; Wherein, said CM signal sends out by sending facsimile machine at a high speed, and sends the machine of receiving faxes at a high speed to through transmitter side gateway 30 and receiver side gateway;
Further, said second detecting unit 302 also is used for after said interception unit 303 is with said CM signal intercept, and after detecting non-CM signal, stops to detect said CM signal.
The high speed facsimile apparatus that the embodiment of the invention provides is realized the transmitter side gateway 30 of low speed fax; Through real-time detection network quality condition; And when network quality parameters is in predetermined threshold value, just begin to detect the CM signal; High-speed facsimile is reduced to the low speed fax, improved gate performance, realize that selecting to use high-speed facsimile flexibly according to network quality still is the low speed fax.Solve gateway and carried out the CM input always, not only reduced the service feature of gateway, and under the good situation of network quality, also high-speed facsimile has been reduced to the low speed facsimile transmission, made the facsimile posting complicated problems.
On the one hand, the embodiment of the invention also provides a kind of high-speed facsimile to realize the network facsimile system of low speed fax, is applied to method shown in Figure 1, referring to Fig. 6, comprise,
Send at a high speed the facsimile machine 10 and the machine 20 of receiving faxes at a high speed, and send facsimile machine 10, transmitter side gateway 30 and the receiver side gateway 40 that machine 20 is connected of receiving faxes at a high speed with said high speed respectively, wherein,
Said high speed is sent facsimile machine 10, is used to send call menu CM signal;
Said transmitter side gateway 30 is used for the CM signal that said high speed transmission facsimile machine 10 sends is sent to said receiver side gateway 40;
Said receiver side gateway 40; Be used for beginning to detect the CM signal when detecting the current network parameter in predetermined threshold value the time, and after confirming to have high-speed facsimile service information in the said CM signal; Tackle said CM signal; Receive the low speed facsimile signal that said high speed is received faxes and sent when machine 20 is not received said CM signal in Preset Time, and carry out the low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway 30 and consult, and fax consulting successfully back startup low speed;
The said high speed machine 20 of receiving faxes is used to receive said CM signal, and sends the low speed facsimile signal when in Preset Time, not receiving said CM signal.
The high speed facsimile apparatus that the embodiment of the invention provides is realized the system of low speed fax; Through real-time detection network quality condition; And when network quality parameters is in predetermined threshold value, just begin to detect the CM signal; High-speed facsimile is reduced to the low speed fax, improved gate performance, realize that selecting to use high-speed facsimile flexibly according to network quality still is the low speed fax.Solve gateway and carried out the CM input always, not only reduced the service feature of gateway, and under the good situation of network quality, also high-speed facsimile has been reduced to the low speed facsimile transmission, made the facsimile posting complicated problems.
On the one hand, the embodiment of the invention also provides another kind of high-speed facsimile to realize the network facsimile system of low speed fax, is applied to method shown in Figure 2, referring to Fig. 6, comprise,
Send at a high speed the facsimile machine 10 and the machine 20 of receiving faxes at a high speed, and send facsimile machine 10, transmitter side gateway 30 and the receiver side gateway 40 that machine 20 is connected of receiving faxes at a high speed with said high speed respectively, wherein,
Said high speed is sent facsimile machine 10, is used to send call menu CM signal;
Said transmitter side gateway 30; Be used for when detecting the current network mass parameter in predetermined threshold value the time; Begin to detect the CM signal; And after confirming to have high-speed facsimile service information in the said CM signal, tackle said CM signal, send low speed facsimile signal to said receiver side gateway 40 when machine 20 is not received said CM signal in Preset Time so that said high speed is received faxes;
Said receiver side gateway 40; Be used for receiving receiving faxes at a high speed and send the low speed facsimile signal when machine 20 is not received said CM signal in Preset Time; And carry out the low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway 30 and consult, and fax consulting successfully back startup low speed;
The said high speed machine 20 of receiving faxes is used to receive said CM signal, and sends the low speed facsimile signal when in Preset Time, not receiving said CM signal.
The high speed facsimile apparatus that the embodiment of the invention provides is realized the system of low speed fax; Through real-time detection network quality condition; And when network quality parameters is in predetermined threshold value, just begin to detect the CM signal; High-speed facsimile is reduced to the low speed fax, improved gate performance, realize that selecting to use high-speed facsimile flexibly according to network quality still is the low speed fax.Solve gateway and carried out the CM input always, not only reduced the service feature of gateway, and under the good situation of network quality, also high-speed facsimile has been reduced to the low speed facsimile transmission, made the facsimile posting complicated problems.
The all or part of step that one of ordinary skill in the art will appreciate that realization said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of said claim.
Claims (16)
1. a high speed facsimile apparatus is realized the method that low speed is faxed, and it is characterized in that, comprising:
When the receiver side gateway detects the current network mass parameter in predetermined threshold value the time, beginning detection of call menu CM signal, wherein, said CM signal sends by sending facsimile machine at a high speed, and sends the high speed machine of receiving faxes to through transmitter side gateway and receiver side gateway;
Detect said CM signal at said receiver side gateway, and after confirming to have high-speed facsimile service information in the said CM signal, tackle said CM signal;
Said receiver side gateway receives the low speed facsimile signal of sending when the said high speed machine of receiving faxes is not received said CM signal in Preset Time;
Said receiver side gateway carries out the negotiation of low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway, and the back starts the low speed fax consulting successfully.
2. high speed facsimile apparatus according to claim 1 is realized the method for low speed fax, it is characterized in that, said receiver side gateway comprises according to the process that said low speed facsimile signal and said transmitter side gateway carry out the negotiation of low speed facsimile signal,
Said receiver side gateway sends coding/decoding negotiation to said transmitter side gateway and becomes agreement request T.38;
Said receiver side gateway receives the coding/decoding negotiation that is sent by said transmitter side gateway and becomes T.38 information of successful.
3. high speed facsimile apparatus according to claim 1 and 2 is realized the method for low speed fax; It is characterized in that; After said receiver side gateway is with said CM signal intercept; Comprise that also said receiver side gateway is ended packing data with said CM signal and sent to the said high speed machine of receiving faxes, and after detecting non-CM signal, stop to detect said high speed and send the CM signal that facsimile machine sends.
4. realize the method for low speed fax according to each described high speed facsimile apparatus of claim 1-3, it is characterized in that, detect the current network mass parameter in predetermined threshold value the time, begin to detect before the CM signal, also comprise at said receiver side gateway,
Said receiver side gateway receives caller single-tone CNG signal, and wherein, said CNG signal is sent and transmitted through said transmitter side gateway by said high speed transmission facsimile machine;
Said receiver side gateway sends said CNG signal to the said high speed machine of receiving faxes;
Said receiver side gateway receives the said high speed machine of receiving faxes and after receiving said CNG signal, sends the high-speed facsimile signal;
Said receiver side gateway sends facsimile machine through said transmitter side gateway to said high speed and sends said high-speed facsimile signal, sends the CM signal so that said high speed is sent facsimile machine.
5. realize the method for low speed fax according to each described high speed facsimile apparatus of claim 1-4, it is characterized in that said network quality parameters comprises the data-bag lost rate, one or more in propagation delay time, the shake.
6. a high speed facsimile apparatus is realized the method that low speed is faxed, and it is characterized in that, comprising:
When the transmitter side gateway detects the current network mass parameter in predetermined threshold value the time; Beginning detection of call menu CM signal; Wherein, said CM signal sends by sending facsimile machine at a high speed, and sends the machine of receiving faxes at a high speed to through said transmitter side gateway and receiver side gateway;
Detect said CM signal at said transmitter side gateway; And after confirming to have high-speed facsimile service information in the said CM signal; Tackle said CM signal; Send low speed facsimile signal to said receiver side gateway when machine is not received said CM signal in Preset Time so that said high speed is received faxes, and then make said receiver side gateway carry out the low speed facsimile signal to consult, and startup low speed is faxed after consulting successfully according to said low speed facsimile signal and said transmitter side gateway.
7. high speed facsimile apparatus according to claim 6 is realized the method for low speed fax; It is characterized in that; After said transmitter side gateway is with said CM signal intercept; Comprise that also said transmitter side gateway is ended packing data with said CM signal and sent to the said high speed machine of receiving faxes, and after detecting non-CM signal, stop to detect said high speed and send the CM signal that facsimile machine sends.
8. realize the method that low speed is faxed according to claim 6 or 7 described high speed facsimile apparatus, it is characterized in that said network quality parameters comprises the data-bag lost rate, one or more in propagation delay time, the shake.
9. a high speed facsimile apparatus is realized the receiver side gateway that low speed is faxed, and it is characterized in that, comprising:
First detecting unit is used to detect the current network quality;
Second detecting unit; Be used for when said first detecting unit confirms that the current network mass parameter is in predetermined threshold value; Detection of call menu CM signal also confirms whether there is high-speed facsimile service information in the said CM signal; Wherein, said CM signal sends by sending facsimile machine at a high speed, and sends the machine of receiving faxes at a high speed to through transmitter side gateway and receiver side gateway;
Interception unit is used for after said second detecting unit confirms that there is high-speed facsimile service information in said CM signal, tackling said CM signal;
Receiving element is used to receive the low speed facsimile signal of sending when the said high speed machine of receiving faxes is not received said CM signal in Preset Time;
Negotiation element be used for carrying out the negotiation of low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway, and the back starts the low speed fax consulting successfully.
10. high speed facsimile apparatus according to claim 9 is realized the receiver side gateway of low speed fax, it is characterized in that, said negotiation element comprises,
Sending module is used for sending coding/decoding negotiation to said transmitter side gateway and becomes agreement request T.38;
Receiver module is used to receive the coding/decoding negotiation that is sent by said transmitter side gateway and becomes T.38 information of successful.
11. realize the receiver side gateway that low speed is faxed according to claim 9 or 10 described high speed facsimile apparatus; It is characterized in that; Said second detecting unit also is used for after said interception unit is with said CM signal intercept, and after detecting non-CM signal, stops to detect the CM signal that said high speed transmission facsimile machine sends.
12. realize the receiver side gateway of low speed fax according to each described high speed facsimile apparatus of claim 9-11; It is characterized in that; Also comprise storage element; Be used to store said network quality parameters, said network quality parameters comprises the data-bag lost rate, one or more in propagation delay time, the shake.
13. a high speed facsimile apparatus is realized the transmitter side gateway of low speed fax, it is characterized in that, comprising:
First detecting unit is used to detect the current network quality;
Second detecting unit; Be used for when said first detecting unit confirms that the current network mass parameter is in predetermined threshold value; Detection of call menu CM signal also confirms whether there is high-speed facsimile service information in the said CM signal; Wherein, said CM signal sends by sending facsimile machine at a high speed, and sends the machine of receiving faxes at a high speed to through transmitter side gateway and receiver side gateway;
Interception unit; Be used for after said second detecting unit confirms that there is high-speed facsimile service information in said CM signal; Tackle said CM signal; Send low speed facsimile signal to said receiver side gateway when machine is not received said CM signal in Preset Time so that said high speed is received faxes, and then make said receiver side gateway carry out the low speed facsimile signal to consult, and startup low speed is faxed after consulting successfully according to said low speed facsimile signal and said transmitter side gateway.
14. high speed facsimile apparatus according to claim 13 is realized the receiver side gateway of low speed fax; It is characterized in that; Said second detecting unit also is used for; After said interception unit is with said CM signal intercept, and stop to detect the CM signal that said high speed transmission facsimile machine sends after detecting non-CM signal.
15. a high-speed facsimile is realized the network facsimile system of low speed fax, it is characterized in that, comprises; Send the facsimile machine and the machine of receiving faxes at a high speed at a high speed, send the transmitter side gateway that facsimile machine is connected with said high speed, and the receiver side gateway that is connected with the said high speed machine of receiving faxes; Wherein
Said high speed is sent facsimile machine, is used to send call menu CM signal;
Said transmitter side gateway is used for the CM signal that said high speed transmission facsimile machine sends is sent to said receiver side gateway;
Said receiver side gateway; Be used for beginning to detect the CM signal when detecting the current network mass parameter in predetermined threshold value the time, and after confirming to have high-speed facsimile service information in the said CM signal; Tackle said CM signal; Receive the low speed facsimile signal of sending when the said high speed machine of receiving faxes is not received said CM signal in Preset Time, and carry out the low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway and consult, and fax consulting successfully back startup low speed;
The said high speed machine of receiving faxes is used to receive said CM signal, and sends the low speed facsimile signal when in Preset Time, not receiving said CM signal.
16. a high-speed facsimile is realized the network facsimile system of low speed fax, it is characterized in that, comprises; Send the facsimile machine and the machine of receiving faxes at a high speed at a high speed, send the transmitter side gateway that facsimile machine is connected with said high speed, and the receiver side gateway that is connected with the said high speed machine of receiving faxes; Wherein
Said high speed is sent facsimile machine, is used to send call menu CM signal;
Said transmitter side gateway; Be used for when detecting the current network mass parameter in predetermined threshold value the time; Begin to detect the CM signal; And after confirming to have high-speed facsimile service information in the said CM signal, tackle said CM signal, send low speed facsimile signal to receiver side gateway when machine is not received said CM signal in Preset Time so that said high speed is received faxes;
Said receiver side gateway; Be used to receive and send the low speed facsimile signal when the said high speed machine of receiving faxes is not received said CM signal in Preset Time; And carry out the low speed facsimile signal according to said low speed facsimile signal and said transmitter side gateway and consult, and fax consulting successfully back startup low speed;
The said high speed machine of receiving faxes is used to receive said CM signal, and sends the low speed facsimile signal when in Preset Time, not receiving said CM signal.
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