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Cisco Bug: CSCur85684 - TLS failure between VCS 8.2 and TC pre5.1.6

Last Modified

Nov 02, 2018

Products (3)

  • Cisco TelePresence Video Communication Server (VCS)
  • Cisco TelePresence Video Communication Server Model
  • Cisco Expressway

Known Affected Releases


Description (partial)


TLS version difference (TLS 1.0 and TLS 1.2)

**VCS Event Log

tvcs: Event="Outbound TLS Negotiation Error" Service="SIP"  / Dst-port="5061" Detail="wrong cipher returned" Protocol="TLS" Level="1" 

**Diagnostics Log

Level="ERROR" CodeLocation="ppcmains/ssl/ttssl/ttssl_openssl.cpp(67)" Method="::TTSSLErrorOutput" Thread="0x7f2bd38cc700": TTSSL_continueHandshake: Failed to establish SSL connection
Detail="TCP Connection Closed" Reason="wrong cipher returned"

**VCS responds with 

657         2014-10-28 22:46:26.855544  TLSv1     Alert (Level: Fatal, Description: Illegal Parameter)

VCS X8.2.X
Endpoint running TC5.1.6 or earlier and the SIP Profile Type on the called endpoint is set to "Standard?
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