Data Modules; High-Speed Data Module - Nortel Passport 4400 Series Hardware Installation Manual

7

Data Modules

High-speed Data Module

There are two versions of the High-speed Data Module (HDM), one with four ports
and one with eight ports. The High-speed Data Module provides additional port
capability, identical to port 1 on the base module. The module supports RS-232,
V.35, V.36, and X.21 interfaces, determined by the cable used. The module can
support both DTE and DCE mode.
Rear View
4 port
8 port
Module switch
Stacking connectors
Indicators
Back
Figure 7-1. High-speed Data Module
7-1