HW Config : 2951 & voice PRI card

Unanswered Question
Jun 10th, 2010

Hello experts,

We have a C2951 router and we want to connect a PRI line on it for voice calls. I am confused as to which specific card/module should buy for this job. Any ideas?

Thank you in advance for your answer

Nikos

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Overall Rating: 4.5 (2 ratings)
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William Bell Thu, 06/10/2010 - 04:35

Nikos,

There are several options available to you.  Take a look at this link for the options:

http://www.cisco.com/en/US/products/ps10536/products_relevant_interfaces_and_modules.html#voicemod

This module is a good candidate based on your high level description:

VWIC2-1MFT-T1/E1
1-port T1/E1 Voice / WAN w/ Drop &  Inser

In addition to the T1 module, you will need DSPs. DSPs are used by the router for voice termination, media mixing, transcoding, etc.   DSPs for the ISR (and ISR G2) are provide on carrier cards called PVDMs.   Your router support the PVDM3  (generation 3).  Review this sheet to help you pick the PVDM that is right for you:

http://www.cisco.com/en/US/partner/prod/collateral/modules/ps3115/data_sheet_c78-553971_ps10537_Products_Data_Sheet.html

HTH.

Regards,
Bill

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