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 ...

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 ...

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 ...

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 ...