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Feb. 8, 2012
Amy King
and
7 other people
answered this question
Is your company adopting the Session Initiation Protocol (SIP)? Why or why not?
If I get the SIP phones and PBX from different manufacturers, say Grandstream phones and a Fonality PBX, what happens if Fonality upgrades their firmware that breaks something on the Grandstream phone? Would Grandstream also upgrade their firmware? How much would this cost and how ... more