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 ...
I have a question for all you No Jitter readers: What is SIP used for? If you are like most people in the communications industry, you will tell me that SIP is used to make telephone calls. Some of ...
Switzerland-based O-FONE (not to be confused with Microsoft’s oPhone) has released a SIP VoIP client for Symbian’s S60 platform. Perhaps more interesting than the client itself is their claim that ...
A new Barix SIP Zone Paging firmware update was announced at ISE 2018. The Session Initiation Protocol (SIP)-based based firmware update integrates audio and paging capabilities with IP-based ...
Demand for quality, well-behaved video calls is growing; keep your users happy by correctly determining your video bandwidth requirements from the get-go. A couple weeks ago, I shared my best ...
Session Initiation Protocol (SIP) is a control (signaling) protocol developed by the Internet Engineering Task Force (IETF) to manage interactive multimedia IP sessions including IP telephony, ...
To "prove" that ALG is off, target a host on a public IP with your SIP client, and run a packet capture there. In the "Contact: <sip:someuser@192.168.34.132>;expires=3600" line of the registration ...
Testers recently found a vulnerability in the Session Initiation Protocol (SIP), an emerging standard used for connections between devices in IP networks such as voice-over-IP phones (see story). But ...
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