[cisco-voip] VG224 + SCCP + FAX + CCM4.1(3) supported?

[Paul Choi]

I got FAX working by disabling ECM on all FXS ports
and enabling fax protocol pass-through codec g711ulaw
on the router where the incoming calls were
originating with a PRI. I stuck the same commands on
the local router and the VG224 and FAX transmissions
were successful henceforth. Thanks folks!

Paul

--- "Jason Aarons (US)" <jason.aarons at us.didata.com>
wrote:

> After spending several hours with TAC after a 224
> IOS upgrade, doing
> debug hpi and extensive troubleshooting to no avail
> (the pcm capture
> said it was the PSTN), we decided to downgrade VG224
> IOS. That didn't
> work.  Changed IOS again and it worked.  I would try
> 2-3 versions of IOS
> before opening a TAC case.
> 
> I have several sites with SCCP/VG224.  The global
> "voice service voip /
> modem passthru" on both VG224 and Gateway is
> recommended.  Disable G3
> and no ECM.  I have modem, faxes, credit card
> readers working when doing
> this.
> 
> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On
> Behalf Of Paul Choi
> Sent: Monday, January 28, 2008 6:42 PM
> To: cisco-voip at puck.nether.net
> Subject: [cisco-voip] VG224 + SCCP + FAX + CCM4.1(3)
> supported?
> 
> I have installed the latest IOS on the VG224 and
> have
> the needed ports registered on the CCM cluster using
> SCCP. Voice calls work fine. FAX transmissions
> however
> don't work the first time around. The first time I
> transmit, I get nothing. The second time the fax is
> automatically retried, it apparently sends ok.
> 
> Is SCCP + fax passthrough just not supported? I see
> no
> documentation on this on Cisco's website.
> 
> I'm pulling my hair out.... :(
> 
> Paul
> 
> 
>  
>
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