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IP to IP FAX using ATA 187 CM 8.6

Hi,

I'm trying to establish IP to IP FAX within IP Telephony environment. I got two traditional fax machines connected with two Cisco ATAs 187 which are registered with Call Manager 8.6.

The product specific configs are same for both ATAs (having Fax Mode set to "T.38 Fax Relay", Maximum Fax Rate to "14400bps" and Codec 711ulaw). Now when I try to send fax from one machine to another it keep on connecting and eventually failed with busy tone. Since I'm new to IP Fax I don't know what I'm missing in this scenario. A little guidance will be highly appreciated!

Anees..

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IP to IP FAX using ATA 187 CM 8.6

Hi Anees...

I got some ATA 186 and VG202 and never can send fax between them through ip network when use codec g.729, i need to use PSTN.

Try to send the fax using PSTN

FAX Machine (A) ---> ATA(A) ---> CUCM ---> PSTN GATEWAY--> CUCM --> ATA(B) --> FAX Machine (B)

if works try without PSTN

FAX Machine (A) ---> ATA(A) ---> CUCM ---> ATA(B) --> FAX Machine (B)

regards!

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