Hi,
I have a problem with Microsoft Teams Direct Routing.
I have a cube cisco 4331 as SBC on premises , but when I try to make calls to PSTN I can´t.
I receive calls from PSTN without problems.
I have this messages in the logs (cube):
SIP/2.0 488 Not Acceptable Media
Warning: 399 "SRTP Offer/Answer not acceptable.RTP configured on dialpeer"
I have a class codec with G711 and G729
The connection is very simple:
MST(internet)--(sip tk)----SBC---(sip tk)----PSTN
I follow this guide "Direct Routing for Microsoft Phone System with Cisco Unified Border Element (CUBE)"
Anny idea?
Regards.