Is the ATA 186 supported in version 9.1? I understand that 186's will support Fax Passthroug and not T.38 Fax. If the customer is using Passthrough are 186's supported under 9.1Thanks, I've bee hearing conflicting answers to this question.
We have ATA 186s and ATA 187s on a network and are able to FAX in and out via the PSTN just fine. However, we are not able to FAX between these devices reliably on the internal network. CUCM version is 7.1.5. Any ideas??