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 ...

In Part 1 of our SIP primer, I covered the SIP foundation layers starting from the message structure and ending with the SIP transactions. We saw how phone registrations and proxies could work using ...

Session Initiation Protocol (SIP), with its promise of serving as a single global signaling standard, has mushroomed in importance for networking in the past year. But it may be years from adoption ...

A SIP trunk is the digital version of an analog phone line. Learn how you can upgrade to a unified digital phone system for your business.

That's true regardless of protocol--TDM, PRI or SIP. For multisite companies, most of the savings related to SIP comes from re-architecting--from using a MPLS or Ethernet network for intra-company ...

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 ...

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, ...

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 ...

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 ...