[cisco-voip] Remove Caller ID Delay

[Ryan Ratliff]

Did you try making a call while watching the output of 'debug vpm  
sig' to compare when you hear the first ring to when the router gets  
the call?  I think somebody else mentioned that the first ring can be  
sent by the telco before the call is actually ringing at the  
destination.

-Ryan

On May 15, 2009, at 12:03 PM, David Zhars wrote:

Hey everyone!

Good ideas all around.  I get Caller ID from the Telco (I have it  
enabled on the lines) it rings into an FXO on a 2801.  Then of course  
it is PLARd over to CCM so it can then ring the proper phone or  
phones.  I have disabled callerID on the 2801 in H323 mode, but that  
seemed to make zero difference.

I am thinking there isn't anything I can do!  It seems to be either a  
telco thing (providing the first imaginary ring to provide comfort to  
the caller that the call is going through while the telco determines  
how to route it) or its the FXO handing off to CCM.  All of my  
reading says there is no way to change the 1 ring the FXO uses to  
hand off to CCM.

If you know of any other tricks I'd be happy to hear them!

Thanks!

David

On Thu, May 14, 2009 at 12:36 PM, Wes Sisk <wsisk at cisco.com> wrote:
Not really.

Part of the ring heard by the external party is what is referred to  
as "gratuitous ringback".  This is time for the PSTN to do call  
routing to destination.

After that the FXO port must wait up to 2 seconds to receive callerid  
from your telco.  You can disable the reception of callerid and have  
the call routed immediately but then you would not receive callerid.

/Wes


On Thursday, May 14, 2009 12:18:50 PM, David Zhars <dzhars at gmail.com>  
wrote:
> CCM 4.1.3, H323 2801, FXO ports.
>
> People call in, they will hear 1.5 rings before we hear any rings.   
> I assume this is setting up Caller ID.  Anyway to stop this, just  
> let the phone ring before Caller ID is transmitted?
>
> thanks.
> _______________________________________________ cisco-voip mailing  
> list
> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip


_______________________________________________
cisco-voip mailing list
cisco-voip at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip