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 ...

SIP-trunking services are still are rapidly growing in availability though interoperability challenges spurred by different vendor and service provider implementations of SIP remain the key obstacle ...

An organization that interacts with the IETF in setting standards for the Session Initiation Protocol (SIP). The SIP Forum was founded in 1999. See SIP. THIS DEFINITION IS FOR PERSONAL USE ONLY. All ...

One nice thing about communications protocols is that there are so many. No matter what you want to do, you can find a protocol that will allow it. Of course, as new communications technologies are ...