Hello Boris,
 
  It seems like your Audiocodes is misconfigured. I had a different problem which might be (or not) related to your problem: Both FS and Audiocodes asked for T.38 and it didn't work.
 
Do you have T38 enabled in FreeSwitch? If so, try the following at your MP:
- At the Fax/Modem screen disable all fax and modems protocols.
- At all other screens set the fax protocol to be T.38
- Add the T.38 codec.
 
I hope this helps.
 
                           __Yehavi: 


2011/7/19 Boris Kovalenko <boris@tagnet.ru>
Hello!

    I need help with fax configuration. My network is:

PSTN E1 --- Cisco AS5350 -- Freeswitch -- Audiocodes MP-114 -- Fax

FS version: FreeSWITCH Version 1.0.head (git-062f07f 2011-07-16 12-35-25 +0200)
Audiocodes firmware: 6.00A.038.004
I can't get faxes working :( In FS profiles there is a parameter <param name="t38-passthru" value="true"/>
Cisco DP fax settings:
fax-relay ecm disable
 fax rate 9600
 fax protocol t38 ls-redundancy 2 hs-redundancy 1 fallback pass-through g711alaw
 no vad

On Audiocodes there is also T38 enabled (as I think) but there is no T38. There are messages on MP-114:
ErrMgs=16 T38Decoder received Non-T38 Packet
and
Modem Relay Is Not Supported! Forcing Bypass Mode


Please, help! What information I need to collect to help solve the problem?
-- 
Regards,
Boris


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