[cisco-voip] VG224 / SCCP / Modem

[Jason Aarons (US)]

This is inaccurate.  
 
Using 4.1(3) with VG224 under 12.4T you can use modem/faxes with SCCP.
 
I've had a VG224 with stcapp (SCCP) running for 2 months with no issues.  My VG24 is co-located on a lan with the T1 CAS gateway.  
 
Clock slips/errorrs via show controller t1 will kill modems/faxes.  Check your clocking, etc.

________________________________

From: cisco-voip-bounces at puck.nether.net on behalf of Andrew Dignan
Sent: Tue 6/20/2006 10:01 PM
To: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] VG224 / SCCP / Modem



The VG224 using the SCCP image does not support fax/modems:

http://www.cisco.com/en/US/partner/products/sw/voicesw/ps556/prod_release_note09186a008041df56.html

------------------------------------------------
*Fax and modems are not supported on FXS ports with SCCP enabled. FXS
ports with either fax or modems attached should be configured in H.323 or
SIP mode.
-------------------------------------------------

andy dignan

> You can plug a cheap analog phone into that VG224 and after the same x
> minutes get disconnected? Verify you can reproduce the problem.
>
> Open a TAC case, sounds like you need some debugs, SDL traces, takes
> -jason
>
> ________________________________
>
> From: cisco-voip-bounces at puck.nether.net on behalf of Jeff Anderson
> Sent: Tue 6/20/2006 12:50 PM
> To: cisco-voip at puck.nether.net
> Subject: [cisco-voip] VG224 / SCCP / Modem
>
>
> Question:
>
> I have a client who is using a VG224 that is configured to use SCCP on CCM
> 4.1. The majority of the ports are used for modems but there are devices
> that need skinny features as well. The problem is the modem calls fail
> after a random amount of time. It could be anywhere from 5 - 30 minutes.
> That same modem plugged directly into a 1FB will have no reliability
> issues.
>
> I have searched Cisco's website and their forums looking for some
> configuration guidelines for modem usage and found nothing. Does anyone
> have any advice to offer?
>
> Thanks,
> Jeff Anderson
>
>
>
>
>
>
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