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Cisco ATA 191 not able to send and receive faxes

Hello,

 

We have new Cisco ATA 191 that are registered to cucm 12.5, however they arent able to send and receive faxes. The current firmware is 12-0-1SR2-3.  Any suggestions?

1 REPLY 1
Nithin Eluvathingal
VIP Advisor

Before fax, you can connect an analogue phone or use the fax machine itself to  test some normal  incoming and outgoing and make sure that you are able to make calls using the ATA. if you are unable to make calls, it could be your Partition configuration issues. 

 

if outgoing calls are working and only fax fails, you need to find out if it fails only for external fax  or both internal and external. if it fails only for external most probably it could be due to the fax protocol.  

do know what protocol your ISP support for fax, is it t.38 or passthrough. 

 

what protocol you use for gateway ?



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