Re: [sipcore] How to signal that a conversation is being recorded

[[e-mail]]

Brian Rosen <[e-mail]> writes:
> Suppose we wanted to do that: we would need to pass to all endpoints
> (think conference) the information that the session was being
> recorded.
>
> Does that make sense?
>
> What would you suggest we use to carry that indication?

I did a little poking around, and found that Siprec RFC 7866 sec. 5.3
defines an "a=record" attribute for SDP to indicate that the session is
being recorded.  And that seems to be an adequate solution to the
problem you describe.  (It take it as understood that each user's UA
will inform that user that recording is in progress, by whatever
mechanism is desired.)

Only after that, did I reread your message carefully, and you seem to be
completely aware of Siprec.  (Likely you know more about it than I do.)

> SIPREC provides the recording
> mechanism, and it's possible for the SIPREC client to insert the
> indications.  This doesn't work very well in applications like
> emergency services, where recording often happens in multiple places.
> We don't want multiple media insertions.  The usual SIP way to do
> things like this is to pass the indication as data in signaling, and
> render the audio/video/whatever locally.

What exactly is the problem you're raising?

Dale