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Cisco Bug: CSCup34622 - Incorrectly formed SDP in encrypted SIP calls rejected with 488_no_share

Last Modified

Aug 22, 2017

Products (1)

  • Cisco TelePresence Server

Known Affected Releases


Description (partial)

An SIP call may fail to be connected with this message on the event log:

SIP     Warning     No supported media codecs found in incoming SDP

This information may be considered slightly unclear as the primary cause relates to an inability to establish an encrypted session.

This is caused by an endpoint advertising RTP/SAVP (encrypted media required) without an corresponding a=crypto lines in the SDP. This is invalid and will result in a failed call.
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