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Cisco Voice Gateway Router

Posted on 2013-10-28
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Last Modified: 2013-10-29
I currently have a 2811 router with two FXO Cards and a PVDM2-16.  We are going to upgrade to a Voice T1 as we are in the need of more phone lines.  Now with a T1 this brings 24 channels meaning I can have 24 simultaneous phone calls right?  Now I know I would need to upgrade my PVDM2, so a PVDM2-32 or a PVDM2-48 would suffice right?  Then the only other thing I would need would be a T1 card for the router.  Would this part number be correct?  VWIC2-1MFT-T1.  So in the end I want to use the same 2811 router, but just get the modules for the router that I need to support the Voice T1.  Both the T1 card and the PVDM2.  So would I be right in saying that the following would work:

PVDM2-32 or a PVDM2-48
VWIC2-1MFT-T1

I just want to make sure I order the right parts.  I've never used a Voice T1 before.
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Question by:denver218
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Expert Comment

by:fgasimzade
ID: 39606438
VWIC2-1MFT-T1 is correct

For PVDM use this DSP calculator from Cisco

http://www.cisco.com/web/applicat/dsprecal/dsp_calc.html
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by:denver218
ID: 39606518
Thanks, I've used that site and I know that a PVDM2-48 will be more than enough.  Even though a PVDM2-48 is more than I need at this current time, I want to get a card I can grow into, and I found one for the right price.  Having a card that will support more channel's than I actually need won't hurt anything right?
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by:fgasimzade
ID: 39606566
No, it won't of course
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by:denver218
ID: 39606611
I didn't think so, but Cisco told be I shouldn't have more channels than what I am going to use, which doesn't make sense because I have a PVDM2 now which supports more channels that I currently use.

My last question is regarding VIC2-4FXO cards and the VWIC2-1MFT-T1.  

Will the Cisco 2821 Router support 3 VIC2-4FXO cards and a VWIC2-1MFT-T1?  I know the PVDM2 has onboard slots on the the mother board so it doesn't take up a slot.
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fgasimzade earned 500 total points
ID: 39607924
I dont know why Cisco said that, since we are now having more DSPs on our routers in my company than we really need, and everything is ok

Yes, it will support 3 VIC2-4FXO cards and T1 card. But you would need adequate number of PVDM2-xx to support all the voice ports.
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Author Closing Comment

by:denver218
ID: 39608649
Thanks
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