Upgrading DSP Channels for PRI lines

Answered Question
Feb 17th, 2009


We have two PRI and 4 BRI lines installed in our Cisco 7206. But we are using only 45 channels live in our PRI lines. Now when i tried to increase the time-slot from 15 channels to 30 channels for 1 PRI line, its giving error message. I like to know how many DSP channels/slots will be available in Cisco 7206 Router board. Please find below our router and dsp details.

Error Message:-

Cisco7206Router(config-controller)#pri-group timeslots 1-31

Current dsp resources can support 26 timeslots;need 2 extra dsps to support the requested configuration

Cisco Router 7206:-

cisco 7206VXR (NPE225) processor (revision A) with 114688K/16384K bytes of memory.

Processor board ID 23677191

R527x CPU at 262MHz, Implementation 40, Rev 10.0, 2048KB L2 Cache

6 slot VXR midplane, Version 2.0

DSP details:-

Dsp firmware version: 4.1.41

Maximum dsp count: 30

On board dsp count: 30

Jukebox available

Total dsp channels available 60

Total dsp channels allocated 45

Total dsp free channels 15

Querying dsp status......



I have this problem too.
0 votes
Correct Answer by Paolo Bevilacqua about 7 years 11 months ago

No shutdown.

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Overall Rating: 5 (2 ratings)
Paolo Bevilacqua Wed, 02/18/2009 - 01:34

Do you have dspfarm configured currently ?

Do you have other E1 ports doing voice in the same router ?

orbitbahrain Wed, 02/18/2009 - 01:40


This is the DSP FARM config,

dspint DSPfarm1/0

codec high ecan-extended

shut 0,6

We have totally 2 PRI lines,

controller E1 1/0

pri-group timeslots 1-16


controller E1 1/1

pri-group timeslots 1-31



Paolo Bevilacqua Wed, 02/18/2009 - 02:02

You have two dsps shutdown. Take them out of that condition and if they prove faulty RMA the PA.

orbitbahrain Wed, 02/18/2009 - 02:38


Thanks a lot for your gr8 support. Let me try out this command and get back to you if any issues.




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