Matthew Crocker wrote:
Think back, The telco started with inline signaling. Pulsing digits, cross bar switching, DTMF, CAS .... 'Yesterdays telco' took signaling out of band for a reason. I'm not sure putting the signaling back into the bearer channel is a 'good thing'.
IAX signalling is out of band in a similar way to the way most modern telephony works. A single IAX connection contains many independant flows. Signalling and voice are distinct. This is equivalent to ISDN or SS7 signalling being its own channel but bundled in the same E1/OC-192/whatever as the voice. It is also not too far from how SCTP works for SS7 over IP.
Steve
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