Method and device for transmitting Internet protocol (IP) secure voice and based on public switched telephone network (PSTN) access

A technology of confidential voice and IP address, which is applied in interconnection devices, telephone communication, transmission systems, etc., can solve the problems of transmission and inability to realize IP confidential voice, and achieve the effect of expanding access places and saving configuration costs

Inactive Publication Date: 2012-06-27
成都三零瑞通移动通信有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, usually the user's office is equipped with a PSTN telephone set, and the user is also accustomed to using the PSTN telephone set for voice communication. However, the PSTN telephone set in the prior art cannot realize the transmission of IP confidential voice.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for transmitting Internet protocol (IP) secure voice and based on public switched telephone network (PSTN) access
  • Method and device for transmitting Internet protocol (IP) secure voice and based on public switched telephone network (PSTN) access
  • Method and device for transmitting Internet protocol (IP) secure voice and based on public switched telephone network (PSTN) access

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The invention discloses a method for transmitting IP confidential voice based on PSTN access, which specifically includes the following steps: after the SIP confidential terminal is started, the SIP secure terminal accesses the Internet through the PSTN network through an ADSL modem, and the SIP secure terminal obtains a temporary allocation IP address, and bind the IP address with the fixed telephone number of the SIP security terminal, and send it to the network gatekeeper; in the call phase, the network gatekeeper realizes the conversion from the telephone number to the IP address; the SIP security terminal includes an A / D converter , vocoder, CPU, network interface chip, the A / D converter, vocoder, CPU, network interface chip are connected in sequence to form a SIP security terminal, and the A / D converter is used for A / D conversion, so The vocoder is used to compress or decompress data, the CPU is used to encrypt and decrypt and demodulate data, and the network inter...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the field of secure communication of electronic communication technology and discloses a method for transmitting Internet protocol (IP) secure voice and based on public switched telephone network (PSTN) access. The method specifically includes the following steps: a session initiation protocol (SIP) secure terminal is accessed into the Internet through the PSTN, acquires a temporarily distributed IP address, binds the IP address with a fixed telephone number of the SIP secure terminal and sends the IP address to a gate keeper after being started, and the gate keeper achieves conversion of the telephone number and the IP address in a call stage. A device for transmitting the IP secure voice and based on the PSTN access is further disclosed. The device is accessed into the Internet through the PSTN to achieve transmission of the IP secure voice and expand access sites of the IP secure voice. The existing network resource, namely the PSTN, is fully utilized, so that configuration cost is saved, and using habit of users is satisfied. By means of the standard SIP, the device can not only achieve secure voice communication with the existing IP secure telephone with the fixed IP but also be conveniently expanded to support secure video communication.

Description

technical field [0001] The invention relates to the secure communication category of electronic communication technology, in particular to a method and device for transmitting IP secure voice based on PSTN access. Background technique [0002] SIP (Session Initiation Protocol) is an application layer signaling control protocol. A session used to create, modify and release one or more participants. These sessions can be Internet multimedia conferencing, IP telephony or multimedia distribution. Existing IP telephones based on SIP protocol are all connected to the local area network. Each IP confidential telephone is assigned a fixed IP address, and users use IP telephones with fixed IP addresses for confidential voice communication. This way of use greatly limits The place of use is limited, and it does not meet the user's habit of using PSTN telephones for voice communication in the past. [0003] PSTN (Public Switched Telephone Network) is a public switched telephone netw...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04M7/00
Inventor 梁鸿斌王驭
Owner 成都三零瑞通移动通信有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap