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Equipment description
553-2731-100
Standard 5.00
April 2000
The in-house error rate should be no greater than 1 error x 10
-7
bits and the
error rate over trunks should be no greater than 1 error x 10
-5
bits (modem
dependent).
Co-located ADM
When installed in the co-located mode, the ADM mounts on the right side of
the telephone as the last add-on module.
•
The ADM supports all data calling activities where the ability to
originate and receive both data and voice calls is required.
•
All co-located ADM modules permit the simultaneous voice and data
transmission through a single telephone.
•
The telephone calling features are available for data calls when a
co-located ADM is used. These features are assigned to the ADM as with
a telephone.
•
The telephone calling features assignable to the ADM for data calls are
located on and accessed from the key/lamp strip or through keyboard
dialing when applicable.
•
The ADM connects to the SL-1 set via two pair of leads. One pair extends
the signaling leads from the SL-1 telephone to the ADM. The other pair
connects the ADM to the signaling logic in the telephone.
•
A data terminal or computer is connected to the ADM via a 25-pin
connector on the rear of the module. This interface conforms electrically
to EIA RS-232 standard and mechanically to ISO-2110.
Stand-alone ADM
The ADM can also be installed in a stand-alone mode to answer (cannot
originate calls) calls as required for data-only in-house calling applications
(for example, to support data service units, modems, printers, or computer
ports) and for receiving incoming calls from trunks to a modem pool or to a
dedicated facility.
In the stand-alone mode, an SL-1 telephone is not required. The ADM is in
an answer-only mode, the same as it is when interfaced to a computer port or
front end processor.
