CN101695102B - Facsimile method and wireless gateway - Google Patents
Facsimile method and wireless gateway Download PDFInfo
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- CN101695102B CN101695102B CN2009102111309A CN200910211130A CN101695102B CN 101695102 B CN101695102 B CN 101695102B CN 2009102111309 A CN2009102111309 A CN 2009102111309A CN 200910211130 A CN200910211130 A CN 200910211130A CN 101695102 B CN101695102 B CN 101695102B
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Abstract
The embodiment of the invention provides a facsimile method and a wireless gateway. The method includes: performing negotiation for a low-speed facsimile session initiation protocol with a sender gateway after receiving a high-speed facsimile signal sent by the sender gateway; starting a low-speed facsimile process after the negotiation for the low-speed facsimile session initiation protocol is successful. The wireless gateway includes a negotiation unit and a low-speed facsimile processing unit, wherein the negotiation unit is used for negotiating with the sender gateway on the low-speed facsimile session initiation protocol after receiving the high-speed facsimile signal sent by the sender gateway, and the low-speed facsimile processing unit is used for starting the low-speed facsimile process after the negotiation for the low-speed facsimile session initiation protocol is successful. The facsimile method and the wireless gateway convert a high-speed facsimile into a low-speed facsimile to process, thereby being adaptable to network bandwidth and improving successful rate of facsimiles.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method and radio network gateway of fax.
Background technology
Fax over IP refers to the G3 Fax business of carrying on the packet switching IP network that does not have QoS (Quality of Service, service quality) to guarantee.Fax over IP is divided into the T.38 fax and the transparently-transmitted fax dual mode at a high speed of low speed.Wherein, transparently-transmitted fax is meant in voice packet and directly facsimile signal and facsimile data passed to the other side, in case voice packet produces packet loss or time-delay, this mode can not guarantee the reliability of faxing.Use and rely on redundancy scheme T.38 to guarantee service quality when T.38 agreement is faxed.T.38 be the complementary agreement that adaptation IP T.30 uses, mainly to T.30 encapsulating, so that adapt to Fax over IP.
V.17 facsimile protocol have, V.29, V.27, V.21, V.34 or the like.Common three classes (G3) facsimile machine in the low speed fax, employing V.17, V.29 agreement is held consultation, V.17 agreement is generally the several speed ranks of 14400bps/12000bps/9600bps/7200bps, and V.29 agreement is generally the several speed ranks of 9600bps/7200bps/4800bps/2400bps; V.34 high speed facsimile apparatus generally adopts agreement to hold consultation, and 2400bps～33600bps speed is that high speed facsimile apparatus is held characteristic.For facsimile protocol T.38, maximum rate is the 14400bps critical value, and incompatibility high speed facsimile apparatus characteristic.
T.38 fax and transparently-transmitted fax dual mode, its core is that facsimile machine reports handling through consultation after the facsimile signal.In the control flow of facsimile signal, there is the difference of internal in the signal that signal that high speed facsimile apparatus reports and low speed facsimile machine report.At present more common technical scheme is: facsimile transmission side's gateway is set up voice channel earlier with fax recipient gateway, is the voice channel of code/decode format G.711A/U under the general situation, reports the type of signal to walk different flow processs according to facsimile machine afterwards.As if the high speed facsimile apparatus that is of two IAD carries, according to the high-speed facsimile signal that reports, carry out transparently-transmitted fax at a high speed, under modal 20ms packing manner, occupied bandwidth is 90.4kbps, near 100kbps.
Present radio network gateway, TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, the CDMA (Code Division Multiple Access) that the time-division is synchronous) gateway for example, by the data card access network, but its upstream and downstream bandwidth inequality.No problem for data service, but for speech business especially facsimile service, up bandwidth is obviously nervous.Under 2: 4 time slots ratio, when running up-downgoing simultaneously, downlink bandwidth is considerably beyond 100K, and upstream bandwidth can only reach K more than 60 at present.In case the popularization facsimile service certainly exists the not enough problem of upstream bandwidth.This problem can produce packet loss, a series of problems such as out of order, causes the fax failure rate to increase, and can't normally fax.When two terminal carry high speed facsimile apparatus under 3G network, Fax over IP were walked the transparently-transmitted fax of high speed, the problem of bandwidth deficiency embodied particularly evident.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: under the network environment of 3G, the high speed facsimile apparatus butt joint, carry out transparently-transmitted fax at a high speed, need upstream bandwidth to reach about 100K under this kind situation, considerably beyond the upstream bandwidth of K more than 60, the fax failure rate is very high.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus of fax, to adapt to the network bandwidth, improves fax success rate.
On the one hand, the embodiment of the invention provides a kind of method of fax, and said method comprises: after receiving the high-speed facsimile signal of transmit leg gateway transmission, carry out low speed fax session initializtion protocol with described transmit leg gateway and consult; After described low speed fax session initializtion protocol is consulted successfully, start low speed fax flow process; Described low speed fax flow process comprises: carry out the low speed facsimile signal with the transmit leg gateway and consult; The message of receiving faxes of low speed facsimile signal through consultation.
On the other hand, the embodiment of the invention provides a kind of radio network gateway, and said apparatus comprises: negotiation element, after being used to receive the high-speed facsimile signal of transmit leg gateway transmission, carry out low speed fax session initializtion protocol with described transmit leg gateway and consult; Low speed fax processing unit is used for after described low speed fax session initializtion protocol is consulted successfully, starts low speed fax flow process; Described low speed fax processing unit comprises: low speed facsimile signal negotiation element is used to consult the low speed facsimile signal; The message receiving element is used for by the described low speed facsimile signal message of receiving faxes.
Technique scheme has following beneficial effect: transfer high-speed facsimile to technological means that the low speed fax is handled because adopt, so adapted to the network bandwidth, improved fax success rate.
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, apparently, 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.
Fig. 1 is the method flow diagram of a kind of fax of the embodiment of the invention;
Fig. 2 is an application example facsimile method schematic diagram of the present invention;
Fig. 3 is the apparatus structure schematic diagram of a kind of fax of the embodiment of the invention;
Fig. 4 is the apparatus structure schematic diagram of the another kind of fax of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, 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 belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment one:
As shown in Figure 1, be the method flow diagram of a kind of fax of the embodiment of the invention, said method comprises:
101, behind the high-speed facsimile signal that reception transmit leg gateway sends, carry out low speed fax session initializtion protocol with above-mentioned transmit leg gateway and consult.
State and carry out low speed fax session initializtion protocol with described transmit leg gateway and consult and to comprise: send low speed fax session initializtion protocol to described transmit leg gateway and consult request; Receive the low speed fax session initializtion protocol negotiation success message that described transmit leg gateway is replied.
102, after consulting successfully, start low speed fax flow process.
Optionally, the low speed facsimile signal of above-mentioned negotiation success can be the signal of T.38 low speed fax critical value 14400bps speed commonly used, 3 redundancy packet, 20ms packaging time length.It is one of following that above-mentioned transmit leg gateway and recipient's gateway can comprise at least: 3G gateway, WiMAX gateway etc.
Described low speed fax flow process comprises: transmit leg gateway and recipient's gateway carry out the low speed facsimile signal to be consulted; Recipient's gateway low speed facsimile signal through consultation message of receiving faxes.
Said method embodiment of the present invention transfers high-speed facsimile to the low speed fax by radio network gateway to be handled, and has adapted to the network bandwidth, has improved fax success rate.
Embodiment two:
As shown in Figure 2, be application example facsimile method schematic diagram of the present invention, it comprises the steps:
201, two 3G IADs (3G transmit leg gateway, 3G recipient's gateway) are set up and are diminished the encoding and decoding voice channel.
Diminish encoding and decoding and be meant that voice packet is by DSP (Digital Signal Processing, when Digital Signal Processing) chip produces, compression algorithm can be carried out compressed encoding to voice signal, and this compression diminishes signal, on the VoIP that is everlasting (Voice over Internet Protocol, the networking telephone) network, occur.Relatively commonly used has: G.726, G.723, G.729 wait.So under the 20ms packaging time length, G.729 the voice channel occupied bandwidth of code encoding/decoding mode is 34.4kbps (other similarly G.723 30ms packing occupied bandwidth be 22.9kbps or the like).
202,3G recipient's gateway by set up diminish the high-speed facsimile signal that the encoding and decoding voice channel receives high speed facsimile apparatus after, send low speed fax SIP (Session Initiation Protocol, conversation initialized protocol) to 3G transmit leg gateway and consult request.
Particularly, can be sending low speed fax SIP negotiation request to 3G transmit leg gateway before, 3G recipient's gateway determines whether current upstream bandwidth supports high-speed facsimile, if do not support, then send low speed fax SIP and consult request to 3G transmit leg gateway, if current upstream bandwidth is supported high-speed facsimile, then 3G transmit leg gateway will send message by the high-speed facsimile signal.
Particularly, send low speed fax SIP to 3G transmit leg gateway and consult to ask and to add the description of low speed facsimile signal in the SIP of recipient's gateway re-invite (fax request) message, send to 3G transmit leg gateway, wait for its response.
203,3G transmit leg gateway is received above-mentioned request, carries out low speed fax SIP and consults the request processing, replys low speed fax SIP and consults success message.When replying low speed fax SIP to consult success message or start T.38 14400bps speed fax flow process afterwards.
204, after 3G recipient's gateway receives that above-mentioned low speed fax SIP consults success message, start T.38 14400bps speed fax flow process.
T.38 the flow process of faxing comprises that specifically 3G transmit leg gateway and 3G recipient's gateway carry out the low speed facsimile signal to be consulted, and T.38 described low speed facsimile signal is consulted is, 14400bps speed facsimile signal is consulted.The utilization of 3G recipient's gateway is consulted successful low speed facsimile signal and is received the T.38 facsimile message that above-mentioned 3G transmit leg gateway sends.
Application example of the present invention transfers the high-speed facsimile flow process to low speed fax flow processing, as the flow process of T.38 faxing by the SIP of high-speed facsimile being consulted be converted to the SIP negotiation of low speed fax.T.38 fax (in modal 3 redundancy packet, under the 20ms packing manner) can take the up-down bidirectional bandwidth and be about 62.4kbps under maximum 14400bps critical value speed, satisfies the 3G environment requirement.Present embodiment has provided and a kind of high-speed facsimile has been transferred to the solution that low speed fax is handled, and is purpose to adapt to bandwidth, improves fax success rate, in other common access network (for example: WiMAX) can use.
Embodiment three:
Corresponding to said method embodiment, as shown in Figure 3, be the apparatus structure schematic diagram of a kind of fax of the embodiment of the invention, said apparatus comprises:
Low speed fax processing unit 302, after being used for low speed fax session initializtion protocol and consulting successfully, the startup low speed flow process of faxing.Specifically being used for carrying out the low speed facsimile signal with the transmit leg gateway consults; The message of receiving faxes of low speed facsimile signal through consultation.
As shown in Figure 4, be the structural representation of the another kind of radio network gateway of the embodiment of the invention, described radio network gateway comprises: passage is set up unit 401, is used for setting up voice channel with described transmit leg gateway; Described voice channel comprises and diminishes the encoding and decoding voice channel.
Optionally, above-mentionedly diminish encoding and decoding and can comprise one of following at least: G.726, G.723, G.729.Above-mentioned negotiation element is consulted successful low speed facsimile signal can comprise the fax signal of critical value 14400bps speed, 3 redundancy packet, 20ms packaging time length of low speed T.38.It is one of following that above-mentioned transmit leg gateway and recipient's gateway can comprise at least: 3G gateway, WiMAX gateway etc., and wherein, the 3G gateway can comprise TD-SCDMA gateway etc., the embodiment of the invention is not as limit.
Signaling receiving element 402 is used to utilize described voice channel to receive the high-speed facsimile signal that the transmit leg gateway sends.
Low speed fax processing unit 404, after being used for low speed fax session initializtion protocol and consulting successfully, the startup low speed flow process of faxing.
Described low speed fax processing unit 404 specifically comprises: low speed facsimile signal negotiation element 4041 is used to consult the low speed facsimile signal, as facsimile signal T.38.Message receiving element 4042 is used for by the described low speed facsimile signal message of receiving faxes.
Described radio network gateway can also comprise: determining unit 405, after being used for described signaling receiving element 402 and receiving the high-speed facsimile signal that the transmit leg gateways send, confirm that the upstream channel bandwidth between described transmit leg gateway and the recipient's gateway is not supported high-speed facsimile; Described negotiation element 403 is used for carrying out low speed fax session initializtion protocol with described transmit leg gateway and consulting after the upstream channel bandwidth between the described determining unit 405 described transmit leg gateways of affirmation and the recipient's gateway is not supported high-speed facsimile.
The above-mentioned radio network gateway embodiment of the present invention so adapted to the network bandwidth, has improved fax success rate because adopt the technological means that high-speed facsimile is transferred to the processing of low speed fax.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct related hardware to finish by program, described program can be stored in the computer read/write memory medium, this program is when carrying out, comprise above-mentioned all or part of step, described storage medium, as: ROM/RAM, disk, CD etc.
Above-described embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the method for a fax is characterized in that, described method comprises:
After receiving the high-speed facsimile signal of transmit leg gateway transmission, carry out low speed fax session initializtion protocol with described transmit leg gateway and consult;
After described low speed fax session initializtion protocol is consulted successfully, start low speed fax flow process; Described low speed fax flow process comprises: carry out the low speed facsimile signal with the transmit leg gateway and consult; The message of receiving faxes of low speed facsimile signal through consultation.
2. method according to claim 1 is characterized in that, the high-speed facsimile signal that described reception transmit leg gateway sends comprises:
Set up voice channel with described transmit leg gateway;
Utilize described voice channel to receive the high-speed facsimile signal that the transmit leg gateway sends.
3. as method as described in the claim 2, it is characterized in that described voice channel comprises and diminishes the encoding and decoding voice channel.
4. method according to claim 1 is characterized in that, described and described transmit leg gateway carries out low speed fax session initializtion protocol to be consulted to comprise:
Send low speed fax session initializtion protocol to described transmit leg gateway and consult request;
Receive the low speed fax session initializtion protocol negotiation success message that described transmit leg gateway is replied.
5. method according to claim 1 is characterized in that, behind the high-speed facsimile signal that described reception transmit leg gateway sends, carries out before low speed fax session initializtion protocol consults with described transmit leg gateway, and described method also comprises:
Do not support high-speed facsimile if confirm the upstream channel bandwidth between described transmit leg gateway and the recipient's gateway, then carrying out low speed fax session initializtion protocol with described transmit leg gateway consults, described consult successfully after, utilize to consult the facsimile message that successful low speed facsimile signal receives described transmit leg gateway transmission.
6. a radio network gateway is characterized in that, described radio network gateway comprises:
Negotiation element after being used to receive the high-speed facsimile signal of transmit leg gateway transmission, carries out low speed fax session initializtion protocol with described transmit leg gateway and consults;
Low speed fax processing unit is used for after described low speed fax session initializtion protocol is consulted successfully, starts low speed fax flow process; Described low speed fax processing unit comprises: low speed facsimile signal negotiation element is used to consult the low speed facsimile signal; The message receiving element is used for by the described low speed facsimile signal message of receiving faxes.
7. as radio network gateway as described in the claim 6, it is characterized in that described radio network gateway also comprises:
Passage is set up the unit, is used for setting up voice channel with described transmit leg gateway;
The signaling receiving element is used to utilize described voice channel to receive the high-speed facsimile signal that the transmit leg gateway sends.
8. as radio network gateway as described in the claim 6, it is characterized in that, the conversation initialized protocol fax request that described negotiation element specifically is used to send the description that carries the low speed facsimile signal is to the transmit leg gateway, and the low speed fax session initializtion protocol that receives the answer of transmit leg gateway is consulted successful message.
9. as radio network gateway as described in the claim 6, it is characterized in that described radio network gateway also comprises:
Determining unit after being used for described signaling receiving element and receiving the high-speed facsimile signal that the transmit leg gateway sends, confirms that the upstream channel bandwidth between described transmit leg gateway and the recipient's gateway is not supported high-speed facsimile;
Described negotiation element is used for after described determining unit confirms that upstream channel bandwidth between described transmit leg gateway and the recipient's gateway is not supported described high-speed facsimile, carries out low speed fax session initializtion protocol with described transmit leg gateway and consults.
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| CN2009102111309A CN101695102B (en) | 2009-09-21 | 2009-09-21 | Facsimile method and wireless gateway |
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| CN2009102111309A CN101695102B (en) | 2009-09-21 | 2009-09-21 | Facsimile method and wireless gateway |
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| CN101695102B true CN101695102B (en) | 2011-12-21 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346958A (en) * | 2013-07-25 | 2013-10-09 | 深圳市共进电子股份有限公司 | Method for negotiating fax signaling |
| CN104901922A (en) * | 2014-03-04 | 2015-09-09 | 中兴通讯股份有限公司 | Data service processing method and device based on session initiation protocol (SIP) |
| CN106330655A (en) * | 2015-06-23 | 2017-01-11 | 西安中兴新软件有限责任公司 | Wireless communication method and equipment supporting circuit switching data business |
| CN110730278A (en) * | 2019-09-06 | 2020-01-24 | 深圳震有科技股份有限公司 | Compatible transmission method, equipment, system and medium for different-speed fax machines |
| CN110958359B (en) * | 2019-11-01 | 2021-08-06 | 深圳震有科技股份有限公司 | High-delay fax method, intelligent terminal and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1201311A (en) * | 1997-06-04 | 1998-12-09 | 日本电气株式会社 | Frame relay communication method and network of fixed-band width telephone signals and variable-bandwidth facsimile signals |
| CN101043520A (en) * | 2006-03-20 | 2007-09-26 | 广东省电信有限公司研究院 | Method for realizing faxes and dialing access service using inceptive session protocol |
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- 2009-09-21 CN CN2009102111309A patent/CN101695102B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1201311A (en) * | 1997-06-04 | 1998-12-09 | 日本电气株式会社 | Frame relay communication method and network of fixed-band width telephone signals and variable-bandwidth facsimile signals |
| CN101043520A (en) * | 2006-03-20 | 2007-09-26 | 广东省电信有限公司研究院 | Method for realizing faxes and dialing access service using inceptive session protocol |
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