Cisco Bug: CSCvi00852 - ATA190 Sending Invalid fax pass-through parameter in SDP "a=fax"
May 14, 2019
- Cisco IP Phone 7800 Series
Known Affected Releases
Symptom: Fax Pass-through switchover with ATA190 and IOS/IOS-XE CUBE/CME Conditions: Call flow(s): ATA190---UCM--SIP--CUBE--SIP--Provider ATA190---BE4000---SIP---Provider This happens when the initial T38 negotiation is rejected with 488 and the ATA190 sends a REINVITE to negotiate fax passthrough g711.
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Bug Details Include
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