Filter
Top Products
703A Data Service Unit (DSU)
703A Data Service Unit (DSU)
The 703A Data Service Unit (DSU) is used with the 7406D voice terminal to provide asynchro-
nous data communications through the switch. The DSU replaces the desk stand under the
7406D voice terminal and allows a data terminal (such as 610 BCT) to be connected to the
7406D and data calls to be made to and from the switch. (See Figure 2 below.)
FIGURE 5-2. Block Diagram of 703A Data Service Unit
Applications
The 703A DSU can be used with 7406D voice terminal connected to a DEFINITY G1, G2, G3,
System 75, or System 85. Typical applications are users with data terminals requiring a large
number of features.
Features
The 703A DSU provides the following features:
Selector for standard data rates of 0.3, 1.2, 2.4, 4.8, 9.6, and 19.2 kbps.
Asynchronous full-duplex operation
Automatic answering of data calls
Data terminal keyboard dialing
Parity switch (even / odd)
5-49