> Can someone explain about SIP,SIP-T and SIP-T ?
> and Asterisk support SIP-I,SIP-T or not ?
It is a way to map and/or encapsulate some values particular to PSTN
signaling protocols (such as ISUP) back into SIP so that SIP can serve
as a minimally viable transport between two nodes that speak those
protocols, i.e.
ISUP ----> SIP/ISUP gateway ----> IP ----> SIP/ISUP gateway ---> ISUP
Asterisk does not really support these because it is a back-to-back user
agent, so it does not need to follow RFC rules regarding conservation of
special headers or data elements in a transaction the way that a proxy
does. Asterisk can and will regenerate new call legs scoped to the
interface technologies it actually supports and cares about.
--
Alex Balashov
Evariste Systems
Web : http://www.evaristesys.com/
Tel : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599
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