[email protected] wrote:
Hi Mark,
until now such a retention indication was not discussed. It's clear that there
will be a temporal relationship between failed call and CC request, but the
question is if we really have to indicate this via SIP?
If we say that about 20 s should be enough to activate CC, incl. time for signalling and user interaction, the definition of a 20 s retention timer at the CC agent should be sufficient to prevent the expiry of the possibility for CC.
BR, Martin
Thank you for the response, Martin, and sorry for not replying sooner, myself.
I'm not too concerned about what a reasonable default expiry for the CC offer
should be. What I am concerned about is whether this may be expressed in some
way. For instance, could an expires= parameter be added to the Call-Info header
sent by the CC monitor in cases where call completion services are available?
Mark Michelson
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