So far so good, except one thing. The Switchvox system basically make the assumption that if you are using a SIP trunk, you will be able to spit out caller ID info for outgoing calls and your SIP ...
An organization that provides voice over IP (VoIP) service and enables calling from SIP phones to plain-old-telephone (POTS) lines and vice versa. SIP is the universal protocol used for Internet ...
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