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Adtran 600 + Cisco 1600 + PBX to Cisco ? + PBX

We have two AdTran 600s which works with two Cisco 1600 series routers to connect two sites over a point-to-point T1.
18 channels are configured for data.
6 channels are configured for voice.

The T1 comes from the SmartJack at each end and goes into the Network port on one of the AdTrans.
The v.35 card in the AdTran connects to the Serial port on the 1600.
A DSX card on the AdTran connects to a T1 Interface card on the PBX.

We want to eliminate the AdTrans and have one router at each end receive the T1 directly from the SmartJack and hand off the 6 channels to the PBX.
From a (somewhat uncertain) call to Cisco pre-sales, I was told a VWIC2-2MFT-T1/E1 card is needed for this to work, and that will only work in a 2801 or better.

Is this a fact?

Is there no way to make the equivalent of the DSX connection to the PBX using, say, a 1720 with a WIC-T1 w/integrated CSU/DSU and some other card to manage the short-haul to the PBX?
If not the 1720, perhaps an 1841 or other model?
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skeleton_key
Asked:
skeleton_key
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1 Solution
 
Scotty_ciscoCommented:
you need something that will demux the t1 if you want to do this exactly as you are mentioning.  What about running VoIP over the T1 circuit?  or is that what is intended.

Thanks
scott
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skeleton_keyAuthor Commented:
Thanks for the reply Scott.

No, VoIP is not part of this config. The PBX at each end is fairly traditional (older Executone system) and each has a T1 interface card that takes the handoff from the TSU via a Cat 5 cable.
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Scotty_ciscoCommented:
if you are stripping off channels to use only for voice you will have to demux the channels either at the DSU/CSU and that is a pricey piece of equipment.  The only ones I am sure that can do it are an expensive adtran unit... I would have to look up the specific model number.  I would probably use this an excuse to run VoIP between the locations and bond the 2 T1's together.

Thanks
Scott
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skeleton_keyAuthor Commented:
A few responses:

a) There is only one T1 in this mix - not sure where you think a second T1 comes into play.

b) Cisco already confirmed they can do this with a VWIC2-2MFT-T1/E1 card, per my original post.

So it seems we can either keep the AdTran we alreadt have deployed, or swap it for an expensive card from Cisco.

-Mark
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