Paradyne 3551 manual Installing the Model 3550 DSU, Before You Begin

Installing the Model 3550 DSU 2

Overview	2-1
Before You Begin	2-1
How to Change Hardware Straps	2-2
Where to Place the DSU	2-4
Installing the DSU	2-4
Power-Up Routine	2-5
Connecting to the Network	2-5
Connecting to the NMS	2-6
Connecting to the Dial (or PSTN) Network	2-6
Connecting to the DDS (or LADS) Network	2-7
Addressing the Unit	2-8
Tributary DSU Addressing	2-9
Connecting the DSU to a DTE	2-10
Connecting Port 2	2-11
Verifying Operation and Testing Connections	2-11
Verifying Network Addresses	2-11
Verifying the Network	2-11
Verifying DBM Operation	2-12
Verifying TDM/Flex Operation	2-12
Other Tests	2-12

Overview

The Model 3550 DSU is designed for desktop operation and is delivered ready to connect to the network. It is configured as a tributary DSU for operation at 9.6 kbps on a multipoint circuit.

If the unit was ordered with a TDM/Flex installed, Ports 1 and 2 are configured for 9.6 kbps operation, and configured as a digital sharing device (DSD). Both ports are configured for EIA-232 operation, rather than V.35 operation. Refer to the MUX (Port) option set tables in Chapter 5 to change this configuration on a port-by-port basis.

Installation consists of the following steps, which should be performed in the order listed.

•Physical installation

•Hardware straps

•Electrical connection

•Network diagnostic connection

•Software configuration

•DDS network (or LADS) connection

•Dial (or PSTN) network connection if a DBM is installed, or if using an external dial backup unit (DBU)

•DSU DTE connection

•Verification testing

Although the Model 3550 DSU is designed for desk or table-top operation, you can order an ACCULINKr

3100 Series CSU wall-mount adapter if you want to mount the DSU on a wall, an equipment shelf, a 19-inch RS-310-C or 23-inch AT&T DATAPHONEr equipment cabinet. Refer to Appendix F to order the adapter.

Before You Begin

Your installation site should be clean, well-lighted, well-ventilated, and free from environmental extremes.

A dedicated grounded ac outlet that is protected by a circuit breaker should be installed within 6 feet of the DSU's planned location. The outlet should be capable of supplying 90 to 132 Vac 60 Hz (U.S. and Canada). The

3550-A2-GB20-20 December 1996 2-1