Engineer is claiming UC520 doesn't have enough DSPs to handle a PRI/T-1

Unanswered Question
Apr 13th, 2010

Are there any issues that would prevent a UC520 8 port box from having enough DSP resources to handle a voice/data T-1/PRI?  Also, if not, is there a document with guidence as to how to configure the IOS to accomidate the task?

I have this problem too.
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mega-byte Tue, 04/13/2010 - 14:06

Dan,
Your engineer may be correct. Each UC520 model is packaged with a different amount of DSP resources. Depending on the specific model (8/16, 24/32 user, etc) you have purchased you may not be able to configure an entire 23 channel PRI due to insufficient DSP resources.

DSP resources are shared amongst several features inside the chassis, including: hardware conferencing, MTP, and transcoding. So, the other DSP-consuming services you have configured on the device may also impact your ability to implement a PRI.

This URL displays the DSP capability in table form: https://supportforums.cisco.com/docs/DOC-9744.

This should answer any questions you may have. If not, feel free to post.

Thanks,

--Mike