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 ...

This chapter describes the Session Initiation Protocol (SIP) in some detail. The anticipation is that an SIP will play a key role in 3G VoIP networks based on IPv6; hence, the coverage we allocate to ...

The carrier moves both on-net and offnet calls through its infrastructure--on-net typically calls transit the provider's managed VOIP service and are included in the basic hosted VOIP/UC fee, offnet ...

Explaining the essential concepts of IPv6 and how they relate to Internet telephony, this guide describes how Internet telephony systems using IPv6 are different from, and better than, Internet ...

Update: We're in the last throes of winter break 2019, which means most Ars' home office phones can stay dormant for a few more days. As such, we've been resurfacing a few classics from the ...

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 ...

We didn’t just take a sip. We took a good long drink of SIP technology in this round of iLabs testing. We gathered more than 50 devices from five SIP server vendors and 13 SIP endpoint vendors to ...

We recently received a reader’s question asking why VoIP quality was different when going over the Internet vs. going over a corporate IP connection. So today, we’d like to review a few basics about ...

The term Voice over IP (VoIP) does not refer to a single service but encompasses an entire collection of services that can fill the phone service needs of many different residential and business ...

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 ...