CTI论坛

SIP系列讲座-关于Replaces header和电话驻留

2017-11-28 16:39:50 作者： 来源：Asterisk微信公众号 评论：0点击： 很多情况下，我们会看到SIP header中支持了timer和Replacs header。我们在前面的讲座中已经提到了timer的用法，今天我们来介绍一下replaces header的使用场景和控制流程。 根据 RFC3891的定义，Replaces header 简单 ...
CTI论坛

SIP系列讲座-SIP安全-3-RTP加密-攻击类型-防范方法-攻击工具

前面的讲座中，他们介绍了SIP安全的几个核心概念，包括，认证，签权，SIP加密，TLS等。现在我们继续讨论关于对语音的加密，DTLS，目前出现的几个安全问题，如何防范这些安全问题和如何使用工具来检测这些问题。 在我们的讲座中，我们前面讨论了对SIP信令 ...
Ars Technica

VoIP in-depth: An introduction to the SIP protocol, Part 1

In our last VoIP installment, we looked at the main reasons why SIP has become a widely adopted protocol, but we left details of the protocol’s inner workings fairly vague. This article will drill ...
No Jitter

SIP Architecture 101

Whether you are working with Avaya, Cisco, Microsoft, or BroadSoft, you will encounter proxies, registrars, and back-to-back user agents. Enterprise Connect is a just a month away, and I am in the ...
EDN

Internet multimedia communications using SIP – Part 1: The JAIN SIP API

In this chapter, we start putting into practice some of the SIP concepts learned so far. We will show some very simple programming examples that illustrate how SIP works. As was stated in previous ...
No Jitter

Debugging Avaya SIP

A basic guide to tracing complicated call flows on an Avaya Aura system. "If I had an hour to solve a problem, I'd spend 55 minutes thinking about the problem and 5 minutes thinking about solutions." ...