Specifications

The Digital Terminal Data Module (DTDM)
Issue 11 December 1999
21-39
Features
Lights
The DTDM is equipped with the following lights:
■ Terminal Ready
■ Call in Progress
■ Carrier On
■ Test in Progress
■ Check options
■ Receive Data
■ Send data
■ Test Result
Speed Indicator lights
The DTDM is equipped with seven indicator lights that show the speed at which
the DTDM is operating.
Switches
The following switches can be used on the DTDM.
■ Speed selector switch — The thumbwheel speed selector switch (located
behind the side cover) selects data rates of LOW, 0.3, 1.2, 2.4, 4.8, 9.6, or
19.2 kbps.
■ Test switch — The Self-Test and Local Loop/Remote loop switches are
located behind the side cover.
■ Option switches — The seven option switches are located behind the side
cover.
■ Data Call Switch — The DTDM is equipped with a Data Call Switch labeled
Originate and Disconnect.
Other Physical Features
Mounting Options
The DTDM is physically mounted to a 7403D or 7405D voice terminal. It attaches
to the right side of the voice terminal. The entire unit can be desk or wall mounted
with one exception: if the voice terminal is equipped with a Function Key Module,
Call Coverage Module or Digital Display Module and a DTDM, it cannot be wall
mounted.
Color Options
The DTDM is available only in silver.