The main challenge: Even if an enterprise wants to interconnect different IPT islands, there is no real incentive for two different vendors to interoperate. VoIP/IPT systems have proliferated to the ...

So our phone system people are trying to setup a SIP trunk on our Mitel 3300 unit. I open up firewall ports and setup 1:1 NAT for the PBX's IP, everything looks like it should be OK. They are telling ...

What's VoIP's Big Security Problem? SIP Session Initiation Protocol (SIP) is a must for voice over IP (VoIP) communication. But by itself, SIP is insecure and easily hacked. Here's what you need to ...

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 ...

Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, modifying and terminating real-time communications sessions between Internet Protocol (IP) devices. SIP ...

Discover the differences between SIP vs VoIP and why those differences don’t really matter that much during the buying process. SIP vs VoIP is a common question, but it’s not going to help you during ...

The Session Initiation Protocol is a necessary piece of the communications puzzle. With the explosion of the number of communication devices, people are more connected than ever before. IP-enabled ...

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) ...

Chances are, your users haven't heard of Session Initiation Protocol (SIP) outside of any meetings you may have had with them concerning your company's telecommunications. But, in fact, SIP is ...

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) ...