On Thu, 29 Jun 2000, Malt, Rob wrote:
> Depending on how they need to connect the T-1 to your phone
> system you may not need a channel bank, and channel banks are expensive.
>
> We do the same thing using a Drop/Add CSU/DSU. It has a V.35 connection
> on the back for the router and a DSX-1 connection for the phone system.
> We peel off several channels for voice and send the rest to the router.
Note that this requires the phone system to have a DSX-1 T1 connection on
it. If your phone system only has traditional analog trunk lines on it,
you need something that can split those out for you. Adtran
(www.adtran.com) has a line of CSU/DSUs with expansion slots that can be
used to terminate analog voice circuits. If you need 4 lines or less, the
TSU or TDU 120 will do it. If you need more than 4 voice circuits, it will
take the TSU 600 series.
> The router will need a V.35 type interface and the Drop/Add csu/dsu will
> connect to that. Any router with a high speed serial link will do. And
> if you are only going to peel off 128k for data, then even an RS-232 speed
> link will work, although V.35 is preferred.
If youre going to use Cisco routers (like the 2600) and your phone system
has a T1 interface, you can get a network module that has the CSU/DSU
built in complete (IIRC) with the the DSX-1 interface. It makes the
cabling simpler, and can save a few bucks.
Joe Matuscak
Rohrer Corporation
717 Seville Road
Wadsworth, Ohio 44281
(330)335-1541
[EMAIL PROTECTED]
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