How it's used: Session Initiation Protocol (SIP) manages communications sessions across an IP network. It locates participants for a session using a user's SIP URL (similar to an e-mail address), ...

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 ...

TRAVERSE CITY -- Appia Communications, a provider of managed communication and network services, last week announced the immediate availability of its new SIP (Session Internet Protocol) trunking ...

Excellent progress is being made regarding the implementation of Voice over Internet Protocol (VoIP) in air traffic management (ATM) as a result of the integration of the ED-137 Standard into ICAO Doc ...

TRAVERSE CITY -- Appia Communications, a provider of managed communications and network services, Thursday announced a new SIP (session Internet Protocol) trunking option with unlimited inbound and ...

The purpose of the network layer is to help route messages between different local networks. Central to this layer is the concept of exclusive network addresses, where every terminal connected to the ...

This post is a bit of 'today I re-learned' and a hopeful help for anyone who might come across this kind of issue, or for myself if I come across it again. Some number of years ago, I remember having ...