[cisco-voip] Inserting a pause in an outbound dial with a PRI

[Christopher M. Bomba]

Create a route pattern that has overlap sending enabled.  That way the digits are sent one at a time and not collected at CCM and sent all at once.  I see this a lot over seas and that is how I implement any dialplan over there.

Chris
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Date: Thu, 07 Feb 2008 22:27:21 -0600
From: Robert Kulagowski <>
Subject: [cisco-voip] Inserting a pause in an outbound dial with a PRI

I have a site in Beijing, and the office used to prepend "96556" on 
their old PBX.  This prepend was a way to send the calls over an 
alternate, cheaper carrier.

I'm trying to do something similar using CM and H.323 gateways.  When I 
manipulate the dialed number appropriately and prepend the 96556, my 
call completion went down the tubes - I'd get 2/3 of the calls failing 
to complete.  Since my techno-mandarin is non-existent, it's been a pain 
to troubleshoot.

One suggestion I received is that we need to pause after sending the 
96556, so that the PSTN class 4/5 switch that we're connected to has a 
chance to react before we send it the rest of the digits.

I'm not sure I know how to do that on a PRI, because when I look at the 
q931 debug, I see the called number go out in a single message.

Ideas?  CM 4.1.3, IOS 12.4(15)T1


------------------------------

From: "Craig Staffin" <>
Subject: Re: [cisco-voip] Inserting a pause in an outbound dial with a
	PRI

I ran into the same issue working with sites in China (Shanghai)

If it is ISDN you have no chance to do anything as far as delays.

However I do know that I had a lot of problems making sure that the ISDN
plan type was set correctly.  This took me a week with a very fluent
Mandarin/English translater.

If I remember correctly the city local 5-8 digit needs to be local and all
else needs to be international.

Craig

On Feb 7, 2008 10:27 PM, Robert Kulagowski <rkulagow at gmail.com> wrote:

> I have a site in Beijing, and the office used to prepend "96556" on
> their old PBX.  This prepend was a way to send the calls over an
> alternate, cheaper carrier.
>
> I'm trying to do something similar using CM and H.323 gateways.  When I
> manipulate the dialed number appropriately and prepend the 96556, my
> call completion went down the tubes - I'd get 2/3 of the calls failing
> to complete.  Since my techno-mandarin is non-existent, it's been a pain
> to troubleshoot.
>
> One suggestion I received is that we need to pause after sending the
> 96556, so that the PSTN class 4/5 switch that we're connected to has a
> chance to react before we send it the rest of the digits.
>
> I'm not sure I know how to do that on a PRI, because when I look at the
> q931 debug, I see the called number go out in a single message.
>
> Ideas?  CM 4.1.3, IOS 12.4(15)T1
>