Unable to receive fax on mm 5.2

[whistle779]

We are trying to enable faxing on MM 5.2 connected to Cm 5.2. via sip. fax protocal is set to t.38, we are getting a denial event

denial event 2378: RejReqT38-not in rgn/hw D1=0x7f40000e D2=0x1

Any Help would be appreciated

I have also copied the trace.

time data
14:13:37 SIP>ACK sip:x.x.x.251:5060;transport=tcp SIP/2.0
14:13:37 Call-ID: 80283f591f96e219c6512f37e700
14:13:42 SIP<INVITE sip:x.x.x.230;transport=tcp SIP/2.0
14:13:42 Call-ID: 80283f591f96e219c6512f37e700
14:13:42 SIP>SIP/2.0 100 Trying
14:13:42 Call-ID: 80283f591f96e219c6512f37e700
14:13:42 Req From IP: [x.x.x.x.]:7000
14:13:42 SIP>SIP/2.0 488 CM rejected FAX request
14:13:42 Call-ID: 80283f591f96e219c6512f37e700
14:13:42 denial event 2378: RejReqT38-not in rgn/hw D1=0x7f40000f D2=0x1
14:13:42 SIP<ACK sip:x.x.x.230;transport=tcp SIP/2.0
14:13:42 Call-ID: 80283f591f96e219c6512f37e700
14:13:42 Start Fax Relay aux:none tone:none uid:0x5000f