Mark, Is the device actually using TLS for the signaling? I don't think CUCM will let you use SRTP if the signaling channel isn't encrypted.
Brian On Fri, May 30, 2014 at 11:41 AM, Mark Holloway <[email protected]> wrote: > I’ve got a non-Cisco SIP device sending SIP Invites to CUCM (SIP Trunk). > The SDP from my device includes RTP and sRTP in the SIP Invite. Reading > Cisco docs it looks like the way Cisco expects sRTP to work is the SIP > Invite should only include sRTP assuming if the call should be encrypted. > If both RTP and sRTP are in the SDP, CUCM will always choose the first one > in the list rather than the preferred type (sRTP in this example). In my > case RTP is being listed first then sRTP, therefore CUCM will never choose > sRTP even though that is what I prefer. > > Has anyone encountered this before and is there a way around it? > > Thanks, > Mark > > > _______________________________________________ > cisco-voip mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/cisco-voip >
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