fax passthrought not working on ccm---h323---ipipgw---sip--ccme

[sdeltoro1]

Hi all, any experiences on it:

I have a ccm---h323(g711)---ipipgw(xcoder)-----sip(g729)---ccme. the calls work fine ans transcoding is o.k but fax not working yet.

[gmarogi]

Before you configure fax pass-through, perform the following tasks:

• Ensure that you install a software release that supports fax pass-through.

• Ensure that you have a working H.323 or SIP network for voice calls.

• Complete voice interoperability testing with third-party gateways and gatekeepers.

• Verify network suitability for fax pass-through by determining the packet loss threshold. Packet loss and latency are two impairments that can have a dramatic effect on fax pass-through performance.

Refer the below URL for “H.323 Fax Pass-Through: Example”

http://www.cisco.com/en/US/docs/ios/12_4t/voice/cisco_ios_fax_and_modem_services_over_ip_application_guide/faxpt.html#wp1160772