Cisco Bug: CSCvi13686 - ISR4K - Outbound faxes originating from certain fax servers may fail to send.
Oct 25, 2019
- Cisco IOS
Known Affected Releases
Symptom: Call Flow Fax Server (3rd Party) -- SIP -- CUCM -- SIP -- ISR4K -- PRI -- PSTN Fax Protocol T.38 The fax will train correctly and start to send the first page. However, the ISR4K will stop sending the page in the middle even though it received the entire page data in the T.38 messaging. Conditions: Happens when the page data from the fax server arrives in larger data blocks
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