AT&T
Office

Model # 4000 Official AT&T telephone equipment

Here are the diagrams and repair parts for Official AT&T 4000 telephone equipment, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

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Showing 3 of 3 parts  |

Battery, 4.8-volt N

#NI

All parts diagram

Battery, 4.8-volt

Part #N

Replaced by #DPN

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Manufacturer substitution
This part replaces N. Substitute parts can look different from the original.
In Stock
Rubber Antenna 14R

#NI

All parts diagram

Rubber antenna

Part #14R

The manufacturer no longer makes this part, and there's no substitute part

Antenna MPE14

#NI

All parts diagram

Antenna

Part #MPE14

The manufacturer no longer makes this part, and there's no substitute part

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