[cisco-voip] Modem passthrough issues.

[Scott Voll]

is the VGW MGCP?  if so, make sure in CCM that the VGW is set to pass
through and not relay.  my VGW was default relay...... Caused huge issues
with fax and modems.

Scott

PS.  I second the G711.

On Wed, Oct 8, 2008 at 7:27 PM, James Buchanan <jbuchanan at ctiusa.com> wrote:

>  I would be interested to see your gateway config. I assume you have modem
> passthrough enabled everywhere. Also, is your ATA in a device pool with a
> region set for G711?
>
>
>
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Bryan Socha
> *Sent:* Wednesday, October 08, 2008 7:18 PM
> *To:* cisco-voip at puck.nether.net
> *Subject:* [cisco-voip] Modem passthrough issues.
>
>
>
> We've been running a ccm setup for about 5 years now, many versions..
> we've always used ata186s for faxes and modems..   We recently had a tech
> refresh of the system after a lease ended and we can't get the modems to
> work.  Actually there is only 1 modem we care about.  The one for the
> security system.  We've never needed to give it a dedicated pots line and
> would prefer to not go that route.   We are fully aware the ata186 doesn't
> support modem passthrough but its always worked in the past.
>
>
>
> We're using PRI lines with 2811 routers for the pstn interface.  Everything
> is setup right, the modem does answer but the call drops about 30 seconds
> later on its own.  Well we think on its own, we're not sure if its just the
> security company software timing out, they obviously have very little
> information about their side…
>
>
>
> Is anyone using a 2800 series router with modem passthrough combined with
> ATA186 adapters?   I'd love to know your config for the combination of
> hardware.
>
>
>
> Thanks,
>
> Bryan
>
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