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Terminate ISDN PRI on Cisco 2811 Router

Posted on 2009-06-30
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Last Modified: 2012-08-14
What interface module do I need to terminate an ISDN PRI on a Cisco 2811 Integrated Services Router?

I thought I needed a VWIC2-1MFT-T1/E1 but now I think I might need a HWIC-1CI1T1-PRI. Or can I use either? Thanks.
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Question by:mmurraynet
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Expert Comment

by:asavener
ID: 24748882
Here's the Cisco tool for configuring hardware:  https://apps.cisco.com/qtc/config/jsp/configureHome.jsp
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by:mmurraynet
ID: 24748906
asavener,

I used the dynamic configuration tool and there are only about 100 interface modules in it. None of which explicitly say they are for ISDN. I forgot to mention that I'm terminating two ISDN PRIs. One for voice and one for data. Thanks for the link though.
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Expert Comment

by:asavener
ID: 24748954
You definitely need the HWIC-1CE1T1-PRI.  An ISDN PRI is NOT the same as a T1.
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Expert Comment

by:asavener
ID: 24748971
OK.  You save a little using the HWIC-2CE1T1-PRI (which has two ports) instead of two of the HWIC-1CE1T1-PRI cards.
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by:mmurraynet
ID: 24749050
asavener, thanks. Does it matter that I'm using one of the PRIs for voice? The notes for the HWIC-1CE1T1-PRI card refers only to WAN connectivity. I'm ordering the voice image and DSPs of course for the router.
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Expert Comment

by:asavener
ID: 24749144
The datasheet specifies "PRI for data".

http://www.cisco.com/en/US/prod/collateral/modules/ps2797/product_data_sheet0900aecd80710c88_ps5949_Products_Data_Sheet.html

I'd be wary expecting to work for voice.
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Expert Comment

by:asavener
ID: 24749177
I think you need a VIC (voice interface card) to use ISDN with voice.
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by:asavener
ID: 24749230
Look like there's only the VIC2-2BRI-NT/TE - supports two BRI ISDN lines.
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mmurraynet earned 0 total points
ID: 24755034
From another post:

"The card you had (VWIC2-1MFT-T1/E1) will do the trick for both the voice and the data."
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by:asavener
ID: 24755963
I'd suggest getting confirmation from Cisco pre-sales.
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