[cisco-voip] CUCM6.01 - MSExchange UM T.38 Faxing

[Wolfe, Robert]

Hi everyone,

 

I have a CUCM6.01 cluster that talks to an Exchange 2007 UM cluster over
SIP.  The issue I have is with T.38 faxing.   I have an eFax service
which is calling into the CUCM, which is a CTI forwarded to VM.  Once
the fax server hits the mailbox, it seems that MSX is not picking up the
fax tones.  

 

There is a known issue on the MS side that I'm looking into, as we are
on MSX07SP1.  I'm going to change the setting, but I wanted to see if
there was anything I'm missing in the GW config to get this to work
properly.  

 

Has anyone successfully gotten CM6 and MSX07 to work with faxing?  Can
it even be done?

 

I am running 12.4(15)T1 on a 2851 with MGCP.   I have ensured that T.38
is on.  Show MGCP excerpt below:

 

MGCP T.38 Max Fax Rate is DEFAULT

MGCP T.38 Fax is ENABLED

MGCP T.38 Fax ECM is ENABLED

MGCP T.38 Fax NSF Override is DISABLED

MGCP T.38 Fax Low Speed Redundancy: 0

MGCP T.38 Fax High Speed Redundancy: 0

MGCP Fax relay SG3-to-G3: ENABLED

 

MGCP Config:

 

mgcp

mgcp call-agent WSDCCM01 2427 service-type mgcp version 0.1

mgcp dtmf-relay voip codec all mode out-of-band

mgcp rtp unreachable timeout 1000 action notify

mgcp modem passthrough voip mode nse

mgcp package-capability rtp-package

mgcp package-capability sst-package

mgcp package-capability pre-package

no mgcp package-capability res-package

no mgcp package-capability fxr-package

no mgcp timer receive-rtcp

mgcp sdp simple

mgcp rtp payload-type g726r16 static

mgcp bind control source-interface GigabitEthernet0/0.299

mgcp bind media source-interface GigabitEthernet0/0.299

!

mgcp profile default

!

 

Thanks for your interest!

 

-rob

 

Rob Wolfe  |   Consultant    |   burwood group, inc.
rwolfe@<no-spam>burwood.com <mailto:rwolfe@%3cno-spam%3eburwood.com>    

 

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