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 ...

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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 ...