[cisco-voip] Troubleshooting Fax Problems

[Nick Matthews]

Try configuring this on your outgoing router:

voice service voip
modem passthrough nse codec g711ulaw

Also make sure your controllers are clean with 'show controllers t1'

-nick

On Fri, Sep 4, 2009 at 6:38 PM, STEVEN CASPER<SCASPER at mtb.com> wrote:
> Also make sure that your speed and duplex match between the ATA and switch port. If I remember correctly these things come out of the box at 10/Half.
>
>>>> "Countryman, Edward" <Edward.Countryman at provena.org> 09/04/09 11:19 AM >>>
> I have a remote site (50 users) trunked with a PRI to a 2821 router.  I
> use ata186's for fax machines.  The users at this site are reporting
> that many of the folks that used to be able fax to them prior to moving
> in cannot now that they are on an ATA.  The fax machine reports "line
> failure" or "no fax detected" when this occurs.  Other sites can fax in
> no problem.  The gateway is set up for fax-pass-through and DTFM relay
> "Current GW Config" (?) and the DSPware is current (28x).  The ATA
> parameters of course are cryptic.  We are a CCM 61 shop
>
> I will likely go to tac but this is one of those problems that is
> painful to troubleshoot.  I was looking for thoughts and experiences on
> resolving these types of issues.
>
>
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