T.37 offramp fax not working

[Avinash Mohod]

Hi,

I have implemented onramp and offramp for my customer. Onramp fax is working fine but the offramp fax is not working. When we test with facsBridge T37 we do not see fax coming on CME router.

Router configuration is

Model: 2911

IOS: 15.4(2)T

I have enabled the mta and foip debugs but no logs are generated. But when I run the wireshark debugs on laptop on which facsBridge application is running, I see acknowledgement from router. But Microsoft fax application which uses facsBridge as modem do the retransmission 2-3 times and then give fatal error.

I am not sure if issue is with config or i am hitting bug. Please guide me how to resolve this issue.

[Avinash Mohod]

one update...on wireshark i am seeing RST, ACK from router which means it is reseting the session...but could not find reason for that. i tired with app_faxmail_offramp.2.0.1.1.tcl and app_faxmail_offramp.2.0.0.0.tcl script, but results are same.

Below is config of cme.

fax receive called-subscriber $d$
fax send transmitting-subscriber $s$
fax interface-type fax-mail
mta send subject Fax from On-Ramp GW
mta send with-subject $s$
mta send postmaster administrator@xxxxsolutions.com
mta send mail-from hostname xxxxsolutions.com
mta send mail-from username info
mta receive aliases xxxxxsolutions.com
mta receive aliases smtp.gmail.com
mta receive aliases 10.1.30.13
mta receive generate mdn
mta receive generate permanent-error
!

application

service onramp flash:/its/app_faxmail_onramp.2.0.1.3.tcl
!
service offramp flash:/its/app_faxmail_offramp.2.0.1.1.tcl
!
service offramp1 flash:/its/app_faxmail_offramp.2.0.0.0.tcl
!
service fax_detect flash:/its/app_fax_detect.2.1.2.4.tcl
 param redirect-number 106
 param mode default-fax

!

dial-peer voice 7010 mmoip
 service fax_on_vfc_onramp_app out-bound
 max-conn 10
 destination-pattern 4652746
 information-type fax
 session target mailto:fax@xxxxsolutions.com
 incoming called-number 4652746
 mdn
 dsn success
 dsn failure
!

dial-peer voice 7020 mmoip
 service offramp1
 max-conn 10
 information-type fax
 incoming called-number 9T
 image encoding MH
 image resolution standard
 mdn
 dsn success
 dsn failure

[Avinash Mohod]

Can anyone help me on this..because of this issue customer has hold the payemnt