Method for realizing simulation service of public telephone exchange net

A technology of public telephone and switching network, applied in the field of communication, can solve the problem of not being able to implement PSTN emulation services well, and achieve the effect of good experience

Inactive Publication Date: 2007-01-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The present invention provides a method for realizing emulation service of public switched telephone network, which is used to solve the problem that PSTN emulation service cannot be well realized when a traditional POTS terminal in the prior art is connected to a packet core network using SIP as call control signaling The problem

Method used

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  • Method for realizing simulation service of public telephone exchange net
  • Method for realizing simulation service of public telephone exchange net
  • Method for realizing simulation service of public telephone exchange net

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Embodiment 1: PSTN simulation service based on off-hook signal interaction.

[0067] Typical PSTN emulation services based on off-hook signal interaction include hotline service and busy storage service. The definitions of these two services can be found in the general technical specification for telephone switching equipment of the Ministry of Posts and Telecommunications.

[0068] The application of these two services is very similar, the difference is that the registration and cancellation methods are different. The following uses the hotline service as an example to describe the application process of the PSTN emulation service interacted by the off-hook signal and the format of the off-hook signal event packet.

[0069] image 3 In , the network access node is omitted. When the network access node and the SIP user agent node are different network entities, the call will pass through the network access node. It should be noted that: the flow diagrams and text descr...

Embodiment 2

[0123] Embodiment 2. According to the off-hook signal interaction, the PSTN emulation service is prompted after off-hook.

[0124] The two PSTN emulation services described in the foregoing embodiment 1 directly trigger the application process of hotline and busy registration according to the off-hook signal. In addition, we know that in the traditional PSTN service, the main function of the off-hook signal is It is to send a dial tone to the off-hook user after off-hook. In addition to listening to the normal dial tone after off-hook, the POTS terminal user has the following two possibilities:

[0125] 1. Listen to a special dial tone or a voice announcement after off-hook. When the user is in arrears, there is a new message in the voice mailbox, the user has registered the unconditional call forwarding service, the user has registered the outgoing call barring service, the user has registered the do not disturb service, the user has registered the absent service, the user ha...

Embodiment 3

[0190] Embodiment 3: PSTN simulation service based on cross-flash signal interaction.

[0191] Typical PSTN emulation services based on cross-flash signal interaction include: call waiting, three-way calling, conference call, call transfer, malicious call search, busy call back, busy deposit, etc. For the definition of the service, please refer to the telephone exchange equipment of the Ministry of Posts and Telecommunications. General Technical Specifications. There are three specific interaction modes of cross-flashing signals in these businesses:

[0192] 1. Dial a specific service code after flashing the hook to activate a service registration, call back if busy and deposit when busy.

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Abstract

This invention discloses a method for realizing simulation service of public phone exchange nets including: A, a POTS terminal is endowed with a service property, B, the PSTN service control unit initiates corresponding trigger event subscribing request to the applied service property to send SIP message to said POTS terminal, C, a SIP user proxy node receives and analyzes the SIP message to establish a subscribing example of said trigger event packet, D, the node receives the trigger signals described by the packet to send SIP information to the PSTN service control unit, E, the control unit analyzes said SIP message and triggers said applied service property of the POTS terminal, in which, after a POTS terminal is accessed to a packet core net using the SIP as the call control signaling, it can still use the PSTN simulation service.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for realizing simulation services of a public telephone switching network. Background technique [0002] At present, with the continuous maturity of packet technology, traditional telecommunication networks based on circuit switching are developing towards broadband telecommunication networks based on packet switching. Many operators are preparing or have established packet telecommunication networks. Although users use packet communication terminals to access packet telecommunication The network is the trend of future development, but during the construction of the packet telecom network, it is impossible for operators to expect all subscribers to uniformly replace terminal equipment, so at least the packet telecom network at the current stage must support the access of traditional POTS terminals , so the packet telecommunication network needs to inherit the traditional PSTN b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M3/42
CPCH04L65/1006H04L29/06197H04M7/0066H04L65/1104
Inventor 施有铸
Owner HUAWEI TECH CO LTD
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