[Freeswitch-users] Inviting both normal and webrtc users

[Allan Kristensen]

Hello,

I'm trying to implement calling Webrtc clients (through kamailio proxy),
which needs ICE, DTLS, etc. in SDP and so we are adding "media_webrtc=true"
when calling and it works fine.
But once we do this, many of our other sip clients complain because they
only support/accept insecure RTP (RTP/AVP).

So question is, shouldn't it be possible to offer both secure and insecure
RTP in the INVITE from FS?

If not then, would it advisable/possible to not send SDP in the initial
invite from FS (we don't need early media for inbound anyway) and then wait
for the client to offer the SDP instead ?
(I'm afraid the ice process might cause a little silence interval at the
start of the call because of the late media setup and user would always
expect media to be up when answering the call)

We really want to have generic way of handling of clients if possible, to
avoid client detection (as currently only kamailio has this info, doing the
location services) or any special config items on sip accounts.

Best regards,
  Allan
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