2500-Series Data Service Unit (DSU)

selectable subrates of 2.4, 4.8, or 9.6 kbps. When used as a LAD, they can also be optioned for 19.2 and 64 kbps operation.

Power

The stand-alone units are provided with a WP90131-L2 power pack. This power pack is plugged into a 115-volt AC wall receptacle not under the control of a wall switch. The multiple-mount housing is provided with a 6-foot power cord that is plugged into a 115-volt AC wall receptacle not under control of a wall switch. Each DSU that is to mounted into the multiple-mount housing is equipped with a WP90131-L1 power pack that is plugged into the power strip on the rear of the housing.

Distance limitations

The 2556A, 2556B, and 2556C DSUs may be located a maximum distance of 50 feet from the DTE. The 2596A, 2596B, and 2596C DSUs may be located a maximum distance of 100 feet from the DTE.

2500-Series DSU Price Element Codes (PECs)

The 2500-Series DSUs and optional components can be ordered using the following PECs:

2556A Data Service Unit—2225-56A

2596A Data Service Unit—2225-96A

2556B Data Service Unit—2225-56B

2596B Data Service Unit—2225-96B

2556C Data Service Unit—2225-56C

2596C Data Service Unit—2225-96C

2500-Series Multiple-Mounting Housing—22253

2600-Series Multiple-Mounting Housing—22263

Additional Documents

The following document contains additional information relating to the 2500-Series Data Service Unit:

2500-Series Data Service Unit User’s Manual, 999-100-188

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AT&T System 85 manual Power, Series DSU Price Element Codes PECs