[cisco-voip] Modems / Faxes

[Voll, Scott]

External Primary
External Secondary 1
External Secondary 2

Then on the PBX side If I put it on Internal the PBX get's LOS and CRC

If I put it on External then it only gets clock slips.

Scott

PS.. The place I hate most!!!!!     it's there fault <---> It's there
fault

-----Original Message-----
From: Walenta, Phil [mailto:philip.walenta at berbee.com] 
Sent: Wednesday, October 27, 2004 1:16 PM
To: Voll, Scott; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Modems / Faxes

Unless fax-relay is turned on, everything will be processed as a voice
call.  The reason the fax and modem calls fail is due to the clock
slips.  A person might hear a pop or crack, a modem or fax machine won't
tolerate a pop and thus begin to retrain.  A single slip is definitely
capable of causing a modem/fax call to drop.
 
After having done some checking on the settings, are you setting your
PRI to the PSTN to "External" or "External Primary"?

________________________________

From: cisco-voip-bounces at puck.nether.net on behalf of Voll, Scott
Sent: Wed 10/27/2004 3:01 PM
To: Josh Duffek; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Modems / Faxes



That's the funny thing.  It is, but the PBX vendor says I need to
provide the clock, and when I provide the clock it starts showing LOS
and CRC.

That's why I'm starting to wonder about how the modem calls are being
processed by the VGW.

Scott

-----Original Message-----
From: Josh Duffek [mailto:consultantjd16 at ridemetro.org]
Sent: Wednesday, October 27, 2004 12:57 PM
To: Voll, Scott; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Modems / Faxes

It's been awhile...but it sounds like the PBX clock isn't sync'd to the
telco.  Can you not set the PRIs going to the PBX to line?

josh duffek    network engineer
consultantjd16 at ridemetro.org

> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-
> bounces at puck.nether.net] On Behalf Of Voll, Scott
> Sent: Wednesday, October 27, 2004 2:42 PM
> To: cisco-voip at puck.nether.net
> Subject: [cisco-voip] Modems / Faxes
>
> I'm online with TAC right now, but I thought I would throw the
question
> out there.
>
> I'm getting clock from the telco on three PRIs.  I used the primary,
> secondary etc. on them.  Then I try to set internal to the PBX (other
3
> PRIs) so that it gets the clock from the PSTN to the PBX.  PBX vendor
> says he's getting clock slip.  We put one of the PRIs back to the PSTN
> and seemed to fix problem.  So any Ideas?  I'm running a CMM with
> 12.3.8xy code running CM 3.3.4sr2.
>
> Could this be a Modem / FAX configuration on the CMM IOS GW?
>
> TIA
>
> Scott
>
>
> _______________________________________________
> cisco-voip mailing list
> cisco-voip at puck.nether.net
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