Emmanuel Proulx is a SIP (Session Initiation Protocol) developer who has written an excellent tutorial on the signaling protocol that is widely used in VoIP to initiate communications sessions between ...

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’m trying to get info from a supplier and they are insistent that a trunk is a 1 to 1 with a call. Now I am 99.999% sure he's wrong, but before I tell him so I wanted to make sure someone who knows ...

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Today, we’d like to talk about how Session Initiation Protocol can bring the call center a greater variety of ways to communicate. SIP, as readers may recall, has three important advantages over H.323 ...

Even many IT professionals haven't heard of the Session Initiation Protocol (SIP), so it's almost certain your users haven't. However, unless you're using an entirely proprietary Voice-over-IP (VoIP) ...

We are becoming less and less dependent on mobile networks. You can get a data signal almost everywhere that you can get a mobile signal and most of us are around WiFi most of the time anyway.

When looking for ways to save in a medium-sized business–or larger–consider your phone infrastructure. Would a more-nimble SIP-based service trump your traditional setup with VoIP calls? SIP hardware ...

When looking for ways to save in a medium-sized business--or larger--consider your phone infrastructure. Would a more-nimble SIP-based service trump your traditional setup with VoIP calls? SIP ...

Even many IT professionals haven't heard of the Session Initiation Protocol (SIP), so it's almost certain your users haven't. However, unless you're using an entirely proprietary Voice-over-IP (VoIP) ...