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Cisco Bug: CSCun57951 - NOTIFY message body missing trailing CRLF for 8831 phone

Last Modified

Nov 27, 2020

Products (35)

  • Cisco SIP IP Phone Software
  • Cisco Unified IP Phone 9951
  • Cisco Unified Wireless IP Phone 7920
  • Cisco Unified IP Phone 7971G-GE
  • Cisco Unified IP Phone 7945G
  • Cisco Unified IP Phone Expansion Module 7914
  • Cisco Unified IP Phone 7962G
  • Cisco Unified IP Phone 7911G
  • Cisco Unified IP Phone 6941
  • Cisco Unified Wireless IP Phone 7925G
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Known Affected Releases


Description (partial)

Calls may fail from 8831 phones.  Call will never setup.

Traffic must traverse a PIX/ASA/FWSM with sip inspection enabled.  The ASA will corrupt the NOTIFY and INVITE packets.
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