[cisco-voip] Cisco 2801 - PRI

[Karen Cheng]

If you do a sow inventory on the router it will show you the amount of DSP's you have installed in the router. Moving the PRI card from one router to another will achieve nothing more than allowing a connection point for the ISDN.

You will at least 1 DSP per channel that your ISDN service has, eg if it is a 30 channel ISDN then you need at least 30 DSP's (comes in certain numbers though).



Karen Cheng
Network Engineer - ICT
Thiess Business Services

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From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jeffrey S. McNeal
Sent: Thursday, 2 July 2009 12:31 PM
To: Mike Thompson; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Cisco 2801 - PRI

There is only 1 PRI.  I have a 2 T1 card 1 for a metro t1 and then the other I was going to use for the PRI.

Jeffrey S. McNeal
Vision Technology Group, LLC
125 West Bruce Street
Harrisonburg, VA 22801
(540) 437-0112 - Office
(540) 437-0129 - Fax


________________________________
From: Mike Thompson [mailto:mthompson729 at gmail.com]
Sent: Wed 7/1/2009 10:25 PM
To: Jeffrey S. McNeal; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Cisco 2801 - PRI
Need to have PVDM2-XX (need 24 total channels total channels: type show diag and look for PVDM, add em up and you'll get the total).

Keep in mind that a 2801 only supports a TOTAL of 30 PVDM channels.

2801 only supports 1 PRI, so if this isn't the first one, that's the issue.

Have to have ISDN switch type set first

Let me know what you get.


From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jeffrey S. McNeal
Sent: Wednesday, July 01, 2009 10:17 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Cisco 2801 - PRI

Hello All,

I am trying to configure a pri on a cisco 2801 but I get the following message:

(config-controller)#pri-group timeslots 1-24
% Not enough DSP resources available to configure pri-group on controller T1 0/1
/1
% The remaining dsp resources are enough for 4 time slots.
% For current codec complexity, 2 extra dsp(s) are required to create this voice
 port.

Can I fix it or is something wrong?


Jeffrey S. McNeal
Vision Technology Group, LLC
125 West Bruce Street
Harrisonburg, VA 22801
(540) 437-0112 - Office
(540) 437-0129 - Fax


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