I've a customer with CCM 4.1 and several ata; almost all fax are working fine exept when they must be intercepted as fax call.
I'll try to be more clear;
In some place there are "devices" that collect both voice and data call from fax connected to ata. If the call is voice is sent to a phone, if the call is data is sent to an analog fax machine.
What we see is that data calls are not correctly forwarded. I've seen http://www.cisco.com/en/US/products/hw/gatecont/ps514/products_administration_guide_chapter09186a00800c4d1e.html#97426 where it's explained FAX-PASSTHROUGHT are sent as voice call... could be this the trouble ? I've to force fax as FAX MODE ?
Any suggest ?