[cisco-voip] Fax Machines

[Scott Coner (US)]

Do you have multiple PRI's on a single gateway?  If so, use something
like this example, notice the 2nd PRI has clock source internal (will
get clocking from the other controller:

network-clock-select 1 T1 0/3/0

controller T1 0/3/0
 framing esf
 linecode b8zs
 pri-group timeslots 1-24
 description Voice PRI to Sprint
!
controller T1 0/3/1
 framing esf
 clock source internal
 linecode b8zs
 pri-group timeslots 1-24
 description Voice PRI to Sprint

Scott

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Justin Church
Sent: Wednesday, July 05, 2006 10:23 AM
To: Ed Leatherman
Cc: ciscovoip
Subject: Re: [cisco-voip] Fax Machines

Are you using ATAs or FXS ports on your gateway for the fax machines? 
We've seen similar behavior on our fax machines when using ATAs, but 
have had no problems since moving them to FXS ports on the gateways.

-jc

Ed Leatherman wrote:
> I hate these things :)
> 
> Have a fax machine at a remote campus that is having trouble recieving

> multi-page faxes. For example it might get halfway through page 8 and 
> spit out a comm error report. Sending seems to work just fine for
them.
> 
> Right now i'm looking at the PRI's they are using and I'm seeing clock

> slips on both T1 controllers, which i've read could cause this
problem. 
> I double checked with the service provider and they say I am supposed
to 
> use their clocking, which matches the default config on my T1 
> controllers (clock source line). Anyone have any advice on figuring
out 
> what is causing the clock slips? Thanks!
> 
> -- 
> Ed Leatherman
> IP Telephony Coordinator
> West Virginia University
> Telecommunications and Network Operations
> 
> 
>
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