Finally, let’s take a look at two proprietary protocols that are supported in Asterisk. |
Skinny/SCCP |
The Skinny Client Control Protocol (SCCP) is proprietary to Cisco VoIP equipment. It is the default protocol for endpoints on a Cisco Call Manager PBX.† Skinny is supported |
in Asterisk, but if you are connecting Cisco phones to Asterisk, it is generally recom- mended that you obtain SIP images for any phones that support it and connect via SIP instead. |
UNISTIM |
Support for Nortel’s proprietary VoIP protocol, UNISTIM, means that Asterisk is the first PBX in history to natively support proprietary IP terminals from the two biggest players in VoIP—Nortel and Cisco. UNISTIM support is totally experimental, and does not work well enough to put into production, but the fact that somebody took the trouble to do this demonstrates the power of the Asterisk platform. |