Network Interface Connection; Table 2-1. Pin Assignments For Telco Connector - ADTRAN DSU III ARdc Manual

Chapter 2. Installation
The chassis should be connected to earth ground.
The following UL requirements must be met during installation:
1. The unit must be connected to a reliably grounded -24 or -48 VDC
source which is electrically isolated from the AC source.
2. The branch circuit overcurrent protection should be a fuse or circuit
breaker rated 48 V, 15 A.
3. The unit should be installed in accordance with the requirements of
NEC NFPA 70.
4. A readily-accessible disconnect device, that is suitably approved and
rated, should be incorporated in the fixed wiring.

NETWORK INTERFACE CONNECTION

The DSU III ARdc's eight-position modular jack (labeled TELCO) connects
to the network when the unit is configured for either dedicated or
switched operation. See Table 2-1 for the connector pin assignments.
Pin
1
2
3-6
7
8
2-2

Table 2-1. Pin Assignments for Telco Connector

Name
R1 Transmit Data from DSU to Network-Ring 1
T1 Transmit Data from DSU to Network-Tip 1
- Not Used
T Receive Data from Network to DSU-Tip
R Receive Data from Network to DSU-Ring
DSU III ARdc User Manual
Description
61200270L1-20