VG204 Configuration - FAX

[kunal.patel.poly]

HI hope someone can help I have a issue where i can not fax in or out using VG204

call flow is

FAX <PORT0/0> VG204 <SCCP> CUCM7.X <SIP> CUBE <SIP> GAMMA Telecom

codec is g711alaw and T38 is enabled with the provider

I have tried the above with registereing the VG204 as MGCP to the CUCM example config would be much appriciated if anyone would have.

many thanks

kp

[Jorge Armijo]

SCCP does not support protocol based t.38, you have to use mgcp/sip/h323:

Commonly Supported Fax/Modem Call Flow Configuration Examples

http://www.cisco.com/en/US/products/sw/voicesw/ps5640/products_configuration_example09186a0080bf23f2.shtml#

ITSP — SIP — CUBE — SIP/H323 — CUCM — SCCP — VG224

VG224 needs to be an MGCP GW for this setup to work. NSE switchover is       only specific to Cisco devices and providers do not support NSE based       switchovers.

The configuration for a CUBE that does T38 is:

dial-peer voice <tag> voip
  fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback 
     pass-through 
  fax-relay ecm disable
  fax-relay sg3-to-g3

Or, if there is no specific configuration on the dial-peer, then this       information displays when you enter the voice service       voip command.

  fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback 
     pass-through 
  fax-relay sg3-to-g3

The configuration for a VG224 that does T38 is:

no ccm-manager fax protocol cisco               
no mgcp fax t38 inhibit  
mgcp package-capability fxr-package
mgcp default-package fxr-package
no mgcp fax t38 ecm

HTH

--
Jorge Armijo

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