As shown in the topic, the topic how to lay their hands on, novice said a hindrance, various genuflect is begged god help me!

CodePudding user response:

The SIP protocol rfc3261
A site of the process for sip http://www.in2eps.com/fo-sip/tk-fo-sip-ex366x.html
Gateway technology involves the connection tracking, NAT, alg
Refer to the Linux kernel source code

CodePudding user response:

H323 alg modules in Linux also has,

CodePudding user response:

Wow, I graduate in 3 years time,,,

CodePudding user response:

This topic is really large,,, compare bai

CodePudding user response:

Big subject, to understand the RFC standards, released in get a device (such as telephone network or IP PBX) caught can gradually learn to see,

CodePudding user response:

See which understood PJSIP SIP is a great god, and learn to huawei when foxconn employees

CodePudding user response:

Read through the SIP books, to study the SIP protocol stack, the PJSIP, for example, the c + + language development

CodePudding user response:

Software support www.csxssx.com