Installing The Model 3551 Dsu; Overview - Paradyne COMSPHERE 3550 Series User Manual

Installing the Model 3551 DSU

Overview

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Before You Begin
How to Change Hardware Straps
Installing the DSU
Power-Up Routine
Connecting to the Network
Connecting to the NMS
Connecting to the Dial (or PSTN) Network
Connecting to the DDS (or LADS) Network
Connecting the DSU to a DTE
Addressing the Unit
Tributary DSU Addressing
Verifying Operation and Testing Connections
To Connect the SDCP to a DSU
Verifying Network Addresses, the Network, and DBM Operation
Other Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview
A Model 3551 DSU is designed for installation in a
COMSPHERE 3000 Series Carrier, which supplies power
and provides the interfaces for connecting to the DDS or
dial networks. Up to 16 DSUs can be installed in the
carrier. Refer to the COMSPHERE 3000 Series Carrier,
Installation Manual for additional carrier and installation
information.
The DSU is delivered ready to install in the carrier. It is
configured as a control DSU for operation at 9.6 kbps on a
multipoint circuit.
A rear connector plate, which is installed onto the rear
of the carrier, is shipped with the DSU. The rear connector
plate contains two connectors: a 25-pin EIA-232-D/V.24
connector and a 25-pin V.35 connector. Once installed, the
DSU can be removed from the front of the carrier without
disconnecting the DTE cables.
3550-A2-GB20-40
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Installation of the DSUs and carrier-related equipment
consists of the following steps, which should be
performed in the order listed.
Hardware straps
DSU physical installation
Network diagnostic connection
Software configuration
DDS network (or LADs) connection
Dial (or PSTN) network connection
(if a DBM is installed)
DSU DTE connection
Verification testing
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