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New Member

can the WIC-1DSU-T1 replace the WIC-1DSU-56K4?

Dear All,

Can anyone tell me is there different between the WIC-1DSU-56K4 and the WIC-1DSU-T1,can the WIC-1DSU-T1 replace the WIC-1DSU-56K4?Thanks very much

New Member

Re: can the WIC-1DSU-T1 replace the WIC-1DSU-56K4?

The 4-wire 56k CSU/DSU implements switched 56k and DDS (leased line ) operation. The hardware feature set is identical to the 4-wire 56/64k CSU/DSU for the 2524-2525.

The 4-wire 56k CSU/DSU is manufactured by Adtran.

* Supports DDS (leased line) operation (AT&T Pub. 62310)

* Supported DDS loop rates 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps

* Supports Switched 56 operation at 56 kbps (AT&T Pub. 41458, Sprint TS-0046)

* Receiver sensitivity -45db at all loop rates

* Diagnostic Functions

o Self Test Function (at power on and user initiated)

o Network line and DTE loopbacks User initiated DTE, line, and remote V.54 loopbacks.

* Compliance

o UL 1950

o UL 1459

o CSA 22.2-950

o CSA 22.2-255

o FCC part 15J Class A

o FCC part 68

As compare to WIC-1DSU-T1

The T1 CSU/DSU WAN Interface Card provides full or fractional T1 service. It does not do channelized T1. Look at this link below for more information.

New Member

Re: can the WIC-1DSU-T1 replace the WIC-1DSU-56K4?


Can you tell me can the WIC-1DSU-T1 replace the WIC-1DSU-56K4 ?Thanks very much



Re: can the WIC-1DSU-T1 replace the WIC-1DSU-56K4?

Yes, it can physically occupy the same slot size (WIC), so it can serve as a replacement in the router. But...

No, you cannot use the WIC-1DSU-56K4 on the same leased line as a WIC-1DSU-T1. You have to replace the leased line circuit too, with one that is compatible with the new WIC.

The T1 leased line circuit uses pins 1, 2, 4, and 5 in an 8-position connector (RJ-45 or RJ-48), when it connects to the DSU/CSU. The 56K leased line uses pins 1, 2, 7, and 8. They don't match up. Signaling on the lines is different, too.

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