CN2870341Y - Analogue caller - Google Patents

Analogue caller Download PDF

Info

Publication number
CN2870341Y
CN2870341Y CN 200520044777 CN200520044777U CN2870341Y CN 2870341 Y CN2870341 Y CN 2870341Y CN 200520044777 CN200520044777 CN 200520044777 CN 200520044777 U CN200520044777 U CN 200520044777U CN 2870341 Y CN2870341 Y CN 2870341Y
Authority
CN
China
Prior art keywords
unit
circuit
signaling
tone
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 200520044777
Other languages
Chinese (zh)
Inventor
朱忠元
潘绍华
杨建能
林达
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai DS Communication Equipment Co Ltd
Original Assignee
Shanghai DS Communication Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai DS Communication Equipment Co Ltd filed Critical Shanghai DS Communication Equipment Co Ltd
Priority to CN 200520044777 priority Critical patent/CN2870341Y/en
Application granted granted Critical
Publication of CN2870341Y publication Critical patent/CN2870341Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Abstract

The utility model discloses a simulated callmaker which comprises a control part and a calling/called end simulation part; the control part comprises a main control unit; the main control unit receives the imported order and controls the calling/called end simulation part to conduct simulated calling in accordance with the simulated calling process; the calling/called end simulation part comprises a signal unit, an audio signal unit, a relay-side unit, an exchange network unit and a user-side unit; the main control unit conduct two-way communication with the five units of the calling/called end simulation part through PCI bus; the exchange network unit is separately connected to the signal unit, audio signal unit, relay-side unit and user-side unit; relay-side unit is connected with the relay port of the tested exchanger, and the user-side unit is connected to user port of the tested exchanger. The utility model is specially applied to test the call completion rate (to the empty seat) of the in-relay in the queuing exchanger; in addition, the utility model can also be used to test the call completion rate between the in-relay to the specified user and user to the out-relay in any exchanger.

Description

Analog caller
Technical field
The utility model relates to a kind of analog caller, specifically, relate to and be specifically applied to test queue switch call proceeding performance, and can be used for testing and go into relaying in any switch designated user, user a kind of analog caller to the percept of call completed between the out-trunk.
Background technology
Analog caller is a kind of testing equipment of switch.It is mainly used in the percept of call completed of test switch, failure judgement character.In the mensuration of exploitation, production, check and the telecommunications network service quality of switch, all use it.Existing analog caller has two classes: user's analog caller and relaying analog caller, the both is used for playing a game test with call proceeding between switch and two specified points of subscriber exchange.Two side interfaces of user's analog caller are user side interface, realize the analog call (i.e. the calling user of two assigned numbers between) of a user to another designated user; And two side interfaces of relaying analog caller are the trunk side interface, realize that an incoming trunk circuit is to an analog call of specifying out-trunk.Application number be 99116968.1 application for a patent for invention be exactly a kind of user's analog caller.Also have a kind of extensive queue switch in use in telecommunications network except office exchange and subscriber exchange, it is to be used for realizing going into that junction call inserts attending a banquet of the free time of group of attending a banquet.But also there is not the special analog caller of testing at queue switch call proceeding performance at present.
Novel content
The purpose of this utility model is, a kind of analog caller is provided, and its two side interface is respectively user side interface and trunk side interface, to overcome the technical problem that does not have to test specially at present queue switch call proceeding performance.
In order to achieve the above object, the technical solution of the utility model is as follows:
A kind of analog caller comprises control section and calling and called end simulation part, and both link to each other with pci bus; Described control section comprises main control unit, external input device and output display unit; External input device links to each other with main control unit with output display unit; Main control unit receives the order of input, and according to the flow process of analog call, control calling and called end simulation part is carried out analog call; Described calling and called end simulation part branch comprises signaling unit, tone signal unit, trunk side unit, switch fabric unit and user side unit; Described main control unit is connected by five unit of pci bus with calling and called end simulation part, sets up two-way communication; Described switch fabric unit connects signaling unit, tone signal unit, trunk side unit and user side unit respectively; Described trunk side unit connects the relaying mouth of tested switch, and the user side unit connects the registered permanent residence of using of tested switch.
Analog caller of the present utility model can send the NO.7 common channel signalling to queue switch by time slot 16 in the trunk interface; Can simulate the calling more than 30 pairs simultaneously; Can detect switch to called ring; Can differentiate signal tones such as ring-back tone that switch sends, busy tone; Can detect the break-make situation of calling and called speech channel: send test patterns to user side from trunk side, user side returns authentification code to trunk side after receiving test patterns; With send test patterns to trunk side from user side, trunk side receives and returns authentification code after the test patterns and give user side; The number that makes a call be can add up, the call establishment number, calls and abandoned call number finished; All kinds of number of faults in the energy statistic of classification abandoned call number; Can calculate the percept of call completed of switch in test period.Realized comprising: go into junction call certainly and attend a banquet user, user through the outbound call of out-trunk, go into the junction call designated user certainly to tested switch relaying mouth and with the analog call between the registered permanent residence; Employing at each to the two-way admittance test sending out different in calling out test patterns and authentification code and realize speech channel and the pair relationhip of the identification usefulness registered permanent residence and relaying mouth; One's name is legion test patterns and authentification code that continuity test adopts digital sound to be combined into obtain the transmission same with speech in speech channel.
Particularly, described user side unit is by the bell flowing detecting circuit, dislodging machine circuit, two/four line change-over circuits, filter circuit, the coding and decoding circuit that link to each other successively, and control circuit and master control interface composition; Control circuit connects dislodging machine circuit, bell flowing detecting circuit, coding and decoding circuit and master control interface respectively; Under the control of main control unit, this user side unit sends dislodging machine signal, receives and detects from the ringing-current of tested exchanger user mouth and finish with the tone signal transmission between the registered permanent residence best friend switching network unit to tested exchanger user mouth.
Described trunk side unit is by 2Mbit/s interface circuit, coding and decoding circuit, frame signal generation and the checking circuit, the elastic store that link to each other successively, and clock extracting circuit, control circuit, master control interface are formed; The frame signal generation links to each other with control circuit, master control interface successively with checking circuit; Clock is extracted in realization from the 2Mbit/s interface synchronously inner for calling set, and finish the transmission of relaying mouth to switching network unit signaling and digital tone signal.
Described signaling unit comprises: drive circuit; The signaling process part links to each other with drive circuit, finishes the communication process between the No.7 signaling second level and second and third grade; The sequencing control part partly links to each other with signaling process with drive circuit respectively, and sequential clock and control signal are provided; The CPU processor, the transmission of control signaling; The RAM memory; And the master control interface, connect signaling process part, sequencing control part, processor and RAM memory respectively by internal bus.
The master control interface of described signaling unit is made of double port memory, processor and main control unit reading and writing is provided and deposits signaling message and order data.
Described tone signal unit comprises: the framing part links to each other with switch fabric unit; One group of touch-tone signal generation module sends to the framing part with touch-tone signal; A ring-back tone generation module sends to the framing part with ring-back tone; The touch-tone signal receiver module receives the touch-tone signal from the framing part; The signal tone identification module receives the signal tone from the framing part; The processing controls part partly links to each other with framing with touch-tone signal receiver module, signal tone identification module respectively; The master control interface partly links to each other with processing controls.
The dual-tone multifrequency digital signal that described tone signal unit produces is double as test patterns and authentification code use except that being used for a called number, realizes the two-way admittance test of speech channel and the pair relationhip that the registered permanent residence and relaying mouth are used in identification.
Described switch fabric unit is made up of switching matrix, clock circuit, control circuit and master control interface; In the dynamic interconnection that realizes path between trunk side unit and tone signal unit, user side unit and the tone signal unit under the control of main control unit, and semifixed connection of signaling unit and trunk side unit path.
Described control section comprises hard disk, links to each other with main control unit.
Description of drawings
Fig. 1 is the application example schematic diagram of analog caller;
Fig. 2 is the formation schematic diagram of analog caller of the present utility model;
Fig. 3 is that the user side unit module is formed structure chart among Fig. 2;
Fig. 4 is that the trunk side unit module is formed structure chart among Fig. 2;
Fig. 5 is that the signaling unit module is formed structure chart among Fig. 2;
Fig. 6 is that Fig. 2 midrange signals Elementary Function module is formed structure chart;
Fig. 7 A, 7B are that the utility model is gone into the enforcement schematic diagram of relaying to the analog call of attending a banquet;
Fig. 8 A, 8B are the enforcement schematic diagram of the out analog call of the utility model user.
Embodiment
According to Fig. 1 to Fig. 8, provide preferred embodiment of the present utility model, and described in detail below, enable to understand better function of the present utility model, characteristics.
Fig. 1 is the application example schematic diagram of analog caller.As shown in the figure, be connected by m bar trunk line between the trunk side of analog caller and the switch relaying mouth, be connected by n bar subscribers feeder between the user side of analog caller and the exchanger user mouth, test.
Fig. 2 is the formation schematic diagram of analog caller of the present utility model.As shown in the figure, analog caller A comprises control section B and calling and called end simulation portion C, and both link to each other with pci bus.Control section B comprises main control unit 1, keyboard 11, display 12 and hard disk 13.Keyboard 11, display 12 and hard disk 13 link to each other with main control unit 1.The user sets up to analog caller A input by keyboard 11 and calls out required parameters, starts test.Call testing is the result shown by display.Calling and called end simulation portion C comprises switch fabric unit 2, user side unit 3, trunk side unit 4, signaling unit 5 and tone signal unit 6.Main control unit 1 is connected with switch fabric unit 2, user side unit 3, trunk side unit 4, signaling unit 5 and tone signal unit 6 by pci bus, sets up two-way communication.Switch fabric unit 2 connects signaling unit 5, tone signal unit 6, trunk side unit 4 and user side unit 3 respectively.Trunk side unit 4 connects the relaying mouth of tested switch, and user side unit 3 connects the registered permanent residence of using of tested switch.
Fig. 3 is that the user side unit module is formed structure chart among Fig. 2.As shown in the figure, and consult Fig. 2, user side unit 3 is made up of coding and decoding circuit 31, filter circuit 32, two/four line change-over circuits 33, dislodging machine circuit 34, bell flowing detecting circuit 35, control circuit 36 and master control interface 37.Coding and decoding circuit 31 wherein, filter circuit 32, two/four line change-over circuits 33, dislodging machine circuit 34 and bell flowing detecting circuit 35 connect successively.Control circuit 36 connects dislodging machine circuit 34, bell flowing detecting circuit 35, coding and decoding circuit 31 and master control interface 37 respectively.Master control interface 37 is connected to main control unit 1 by pci bus.The last row bus UHW of coding and decoding circuit 31 and following row bus DHW are connected with switch fabric unit 2.The A of bell flowing detecting circuit 35, the tested exchanger user mouth of B termination.Under the control of main control unit 1, this user side unit 3 sends dislodging machine signal, receives and detects from the ringing-current of tested exchanger user mouth and finish with the tone signal transmission between the registered permanent residence best friend switching network unit 2 to tested exchanger user mouth.
Fig. 4 is that the trunk side unit module is formed structure chart among Fig. 2.As shown in the figure, and consult Fig. 2, trunk side unit 4 is produced by 2Mbit/s interface circuit 41, coding and decoding circuit 42, frame signal and checking circuit 43, elastic store 44, clock extracting circuit 45, control circuit 46 and master control interface 47 are formed.2Mbit/s interface circuit 41 wherein, coding and decoding circuit 42, frame signal produce and link to each other successively with checking circuit 43, elastic store 44.Frame signal produces and is connected with switch fabric unit 2 with the following row bus DHW of checking circuit 43.The last row bus UHW of elastic store 44 is connected with switch fabric unit 2.2Mbit/s interface circuit 41 connects tested switch relaying mouth.2Mbit/s interface circuit 41 sends signal to clock extracting circuit 45, and clock extracting circuit 45 sends signal to coding and decoding circuit 42.Frame signal produces and links to each other successively with checking circuit 43, control circuit 46 and master control interface 47.Master control interface 47 is connected to main control unit 1 by pci bus.Trunk side unit 4 is connected with tested switch relaying mouth, and clock is synchronously inner for analog caller in the extraction 2Mbit/s interface, and finishes the transmission of relaying mouth to signaling between the switching network unit 2 and digital tone signal.
Fig. 5 is that the signaling unit module is formed structure chart among Fig. 2.As shown in the figure, and consult Fig. 2, signaling unit 5 is made up of drive circuit 51, signaling process part 52, sequencing control part 53, RAM memory, processor CPU and master control interface 54.The last row bus UHW of drive circuit 51 and following row bus DHW are connected with switch fabric unit 2.Signaling process part 52 links to each other with drive circuit 51, finishes the communication process between the No.7 signaling second level and second and third grade.Sequencing control part 53 links to each other with signaling process part 52 with drive circuit 51 respectively, and sequential clock and control signal are provided.The transmission of processor CPU control signaling.Master control interface 54 is made up of double port memory (DPRAM), connect signaling process part 52, sequencing control part 53, processor CPU and RAM memory respectively by internal bus, the two-way reading and writing of CPU and main control unit 1 are provided and deposit signaling message and order data.Master control interface 54 is connected to main control unit 1 by pci bus.
By the semifixed connection of network, signaling unit 5 is realized the signaling channel in the 2Mbit/s link of relaying side unit 4 is inserted and extract message.Under main control unit 1 control, send signaling message according to the NO.7 signaling method, and send to main control unit 1 after the signaling message that receives resolved.
Fig. 6 is that Fig. 2 midrange signals Elementary Function module is formed structure chart.As shown in the figure, and consult Fig. 2, tone signal unit 6 is made up of one group of Dual Tone Multifrequency signal generating module 61, ring-back tone generation module 62, Dual Tone Multifrequency signal receiving module 63, signal tone identification module 64, framing part 65, processing controls part 66 and a master control interface 67.The last row bus UHW of framing part 65 and following row bus DHW are connected with switch fabric unit 2.Touch-tone signal generation module 61 sends to framing part 65 with touch-tone signal.Ring-back tone generation module 62 sends to framing part 65 with ring-back tone.The signal tone that signal tone identification module 64 receives from framing part 65.The dtmf signal that dtmf signal receiver module 63 receives from the framing part.Processing controls part 66 links to each other with dtmf signal receiver module 63, signal tone identification module 64 and framing part 65 respectively.Master control interface 67 is connected to main control unit 1 by pci bus.
Dtmf signal generator has 16 kinds of double frequency numeral tone signal, and corresponding number is 0~9,11~16.Except that send out as the calling subscriber called number with, these 16 digital sound double as are that test patterns and authentification code use, and realize the two-way admittance test of speech channel and the identification pair relationhip with the registered permanent residence and relaying mouth.Send out two digital sounds, 256 test patterns of one-tenth then capable of being combined and authentification code continuously if adopt.
Switch fabric unit 2 adopts switching matrix, clock circuit, control circuit and master control interface to form, and constitutes identical with switching network in the general switch.Switch fabric unit 2 is in the dynamic interconnection that realizes path between trunk side unit 4 and tone signal unit 6, user side unit 3 and the tone signal unit 6 under the control of main control unit 1, and semifixed connection of signaling unit 5 and trunk side unit 4 paths.
Go into relaying the analog call of attending a banquet is implemented to see Fig. 7 A and Fig. 7 B.Idiographic flow is as follows: set up to analog caller input by keyboard and call out required parameters, as: type of call, call out logarithm, called number/access code, method of calling, tone signal detection time, on-hook order, length of testing speech, signaling point code etc.The parameter that main control unit recorder is arrived performs to call out and prepares, and after receiving the starting command that operating personnel send, the analog caller main control unit is checked the initial condition of each component units.Under the normal condition of initial condition, carry out analog call.After the beginning analog call, main control unit starts signaling unit and sends initial address message IAI through the trunk side unit to tested switch.After tested switch was received IAI, according to called access code among the IAI, selected idle seating sent Address Complete Message ACM and ring-back tone at the relaying mouth in the attending a banquet in belonging to this access code, simultaneously to the selected ring of attending a banquet.After analog caller is received ACM message, detect ringing-current, simultaneously the trunk side unit is received through switch fabric unit in the tone signal unit at user side.Analog caller is received ring-back tone and after user side has detected ringing-current at trunk side, sends out off hook signal to tested switch on the way what user side had a ringing-current.Tested switch is found to cancel ring and ring-back tone behind user's off-hook, and sends out response message ANN at the relaying mouth to analog caller.Analog caller sends one group of selected test patterns to tested switch after receiving ANN message and detect the trunk side ring-back tone and disappearing in the trunk side speech channel.Test patterns via the relaying oral instructions of tested switch to using the registered permanent residence.Analog caller parses the content of test patterns after user side is received this test patterns, user side to tested switch send one with the corresponding authentification code of the test patterns of being received, authentification code is delivered to the analog caller trunk side via tested switch with the registered permanent residence, relaying oral instructions.Analog caller is resolved the authentification code of receiving at trunk side, check out the test patterns of sending and the authentification code of receiving coupling after, send clear message CLF at trunk side to tested switch.Tested switch is sending busy tone with the registered permanent residence to the user after receiving CLF, sends release guard message RLG at the relaying mouth.Analog caller sends the tested switch of Called Onhook signalisation and can restore after user side is received busy tone, record calling this time is the successful calling of finishing after trunk side is received RLG.If any tone signal appears can not receive in analog caller in test process, then be considered as the switch fault that continued, give statistic of classification.
Fig. 8 A and Fig. 8 B are seen in the enforcement of the out analog call of user.Idiographic flow is as follows: analog caller is made off-hook at user side.Tested switch is being used registered permanent residence Sending dialled number sound after receiving user's off hook signal.After analog caller was received dialing tone, its main control unit control tone signal unit sent called number from user side to tested switch through switch fabric unit with dtmf signal.Tested switch sends initial address message IAI from the relaying mouth to analog caller after receiving called number, selected idle out-trunk, complete connection.Analog caller is sent out Address Complete Message ACM at trunk side to tested switch after receiving IAI, and startup tone signal unit sends ring-back tone to tested switch through switch fabric unit in the trunk side speech channel.Ring-back tone through tested switch relaying mouth, with the registered permanent residence to the analog caller user side, analog caller is received behind the ring-back tone at the disconnected ring-back tone of trunk side, is sent called party answer message ANN, sends test patterns simultaneously in the user side speech channel.Test patterns is delivered to the relaying mouth through tested exchanger user oral instructions.Analog caller parses the content of test patterns after trunk side is received this test patterns after, trunk side to tested switch send one with the corresponding authentification code of the test patterns of being received.Authentification code is delivered to the analog caller user side via relaying mouth, user's oral instructions of tested switch.Analog caller is resolved authentification code, check out the test patterns of sending and the authentification code of receiving coupling after, send on-hook signal at user side to tested switch.Tested switch is sent out clear message CLF at the relaying mouth after receiving user's on-hook signal.After analog caller is received CLF message, send release guard message RLG to tested switch, notify tested switch to restore, finished an analog call at trunk side.
The front provides the description to preferred embodiment, so that any technical staff in this area can use or utilize the utility model.To this preferred embodiment, those skilled in the art can make various modifications or conversion on the basis that does not break away from the utility model principle.Should be appreciated that these modifications or conversion do not break away from protection range of the present utility model.

Claims (8)

1, a kind of analog caller is characterized in that, comprises control section and calling and called end simulation part, and both link to each other with pci bus;
Described control section comprises main control unit, external input device and output display unit; External input device links to each other with main control unit with output display unit; Main control unit receives the order of input, and according to the flow process of analog call, control calling and called end simulation part is carried out analog call;
Described calling and called end simulation part branch comprises signaling unit, tone signal unit, trunk side unit, switch fabric unit and user side unit; Described main control unit is connected with above-mentioned five unit by pci bus, sets up two-way communication; Described switch fabric unit connects signaling unit, tone signal unit, trunk side unit and user side unit respectively; Described trunk side unit connects the relaying mouth of tested switch, and the user side unit connects the registered permanent residence of using of tested switch.
2, analog caller as claimed in claim 1, it is characterized in that, described user side unit is by the bell flowing detecting circuit, dislodging machine circuit, two/four line change-over circuits, filter circuit, the coding and decoding circuit that link to each other successively, and control circuit and master control interface composition; Control circuit connects dislodging machine circuit, bell flowing detecting circuit, coding and decoding circuit and master control interface respectively; Under the control of main control unit, this user side unit sends dislodging machine signal, receives and detects from the ringing-current of tested exchanger user mouth and finish with the tone signal transmission between the registered permanent residence best friend switching network unit to tested exchanger user mouth.
3, analog caller as claimed in claim 1, it is characterized in that, described trunk side unit is by 2Mbit/s interface circuit, coding and decoding circuit, frame signal generation and the checking circuit, the elastic store that link to each other successively, and clock extracting circuit, control circuit, master control interface are formed; The frame signal generation links to each other with control circuit, master control interface successively with checking circuit; Realize Clock Extraction, it is synchronously inner to finish calling set, and the relaying mouth is to the transmission between switching network unit signaling and the digital tone signal.
4, analog caller as claimed in claim 1 is characterized in that, described signaling unit comprises:
Drive circuit;
The signaling process part links to each other with drive circuit, finishes the communication process between the No.7 signaling second level and second and third grade;
The sequencing control part partly links to each other with signaling process with drive circuit respectively, and sequential clock and control signal are provided;
Processor, the transmission of control signaling;
The RAM memory; And
The master control interface connects signaling process part, sequencing control part, processor and RAM memory respectively by internal bus.
5, analog caller as claimed in claim 4 is characterized in that, the master control interface of described signaling unit is made of double port memory, processor and main control unit reading and writing is provided and deposits signaling message and order data.
6, analog caller as claimed in claim 1 is characterized in that, described tone signal unit comprises:
The framing part links to each other with switch fabric unit;
One group of touch-tone signal generation module sends to the framing part with touch-tone signal;
A ring-back tone generation module sends to the framing part with ring-back tone;
The touch-tone signal receiver module receives the touch-tone signal from the framing part;
The signal tone identification module receives the signal tone from the framing part;
The processing controls part partly links to each other with framing with touch-tone signal receiver module, signal tone identification module respectively;
The master control interface partly links to each other with processing controls.
7, analog caller as claimed in claim 6 is characterized in that, dual-tone multifrequency digital signal double as test patterns that described tone signal unit produces and authentification code use, and the pair relationhip with the registered permanent residence and relaying mouth is tested and discerned to the two-way admittance of realization speech channel.
8, analog caller as claimed in claim 1 is characterized in that, described switch fabric unit is made up of switching matrix, clock circuit, control circuit and master control interface; In the dynamic interconnection that realizes path between trunk side unit and tone signal unit, user side unit and the tone signal unit under the control of main control unit, and semifixed connection of signaling unit and trunk side unit path.
CN 200520044777 2005-09-02 2005-09-02 Analogue caller Expired - Lifetime CN2870341Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520044777 CN2870341Y (en) 2005-09-02 2005-09-02 Analogue caller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520044777 CN2870341Y (en) 2005-09-02 2005-09-02 Analogue caller

Publications (1)

Publication Number Publication Date
CN2870341Y true CN2870341Y (en) 2007-02-14

Family

ID=37725284

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520044777 Expired - Lifetime CN2870341Y (en) 2005-09-02 2005-09-02 Analogue caller

Country Status (1)

Country Link
CN (1) CN2870341Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112261230A (en) * 2020-10-23 2021-01-22 上海中通吉网络技术有限公司 Express call answering rate assessment method, device, equipment, system and storage medium
CN114363159A (en) * 2021-12-29 2022-04-15 国网天津市电力公司 Relay signaling simulation detection device for power secondary system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112261230A (en) * 2020-10-23 2021-01-22 上海中通吉网络技术有限公司 Express call answering rate assessment method, device, equipment, system and storage medium
CN114363159A (en) * 2021-12-29 2022-04-15 国网天津市电力公司 Relay signaling simulation detection device for power secondary system

Similar Documents

Publication Publication Date Title
CN1227945C (en) Method and system for setting up speech connection in different networks
US20060018448A1 (en) Routing telephone calls via a data network
CN102571196B (en) Emulation module, ONU equipment and communication failure diagnostic method
CN101079920A (en) Narrow user board with testing function and automatic testing method of user line
CN2870341Y (en) Analogue caller
CN101262520A (en) A terminal with suspicious call filtration function and its filtration method
CN101068230B (en) Method for realizing user exchanger in media gateway
CN100542196C (en) The method and system that a kind of toll operator of realization inserts
CN1640060A (en) Method and system for notifying customer of voicemail using an atm signaling channel from an ATM/DSL head-end network
US20060018452A1 (en) Multi-line telephone calling
CN1349339A (en) Method of filtering phone call and avoiding harassing call
CN1809103A (en) Real-time mobile interphone short message system and method of providing service to users with the system
US7013000B2 (en) MTA intercom feature
CN101287038B (en) Device and method capable of detecting reverse polarity of subscriber circuit
AU766925B2 (en) Communication terminal and advertising method using the same
JPH06125399A (en) Inter-station control system for pbx
CN101127962B (en) Establishment method for half call flow of V5 wireless users
CN101068268B (en) Method and system for realizing one-machine and several-number in switch-in gateway
CN106331384A (en) Media channel test method and device
US20060018449A1 (en) Telephone call routing
CN102932560B (en) Method for realizing relay junction and calling information extraction by using digital relay voice card
CN101163176B (en) Method of implementing call-out type VOIP service backup
CN100589508C (en) A kind of method that stationary tone is provided in access device
CN101415049A (en) Method and system for transferring and displaying number in group
CN1065388C (en) Conference on-hook processing method for interactive telephone conference system

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Expiration termination date: 20150902

Granted publication date: 20070214

EXPY Termination of patent right or utility model