Paradyne 3550, 3551 , .

14

7. At the rear of the carrier, connect the appropriate DTE interface cable (EIA-232-D

or V.35) to the rear connector plate. For an EIA-232-D interface cable, connect the

EIA-232-D cable to the top DTE connector on the rear connector plate.

For the 25-pin V.35 interface, a V.35 adapter is shipped with the unit. To connect a

V.35 adapter to the 25-pin V.35 connector, perform the following steps:

— Connect the 25-pin end of the V.35 adapter to the bottom DTE connector of

the rear connector plate. Tighten the thumbscrews on each side of the

connector.

— Connect the V.35 interface cable to the 34-pin end of the V.35 adapter, then

tighten the screws on each side of the cable connector.

25-Pin Connector

V.35 Adapter

V.35 Cable

Thumbscrews

99-16298

8. The installed DSU is connected to the DDS network through the 50-pin connectors

at the rear of the carrier. These interfaces are specified in the USOC RJ48T, and

the pin assignments are shown in Appendix D of the User’s Guide. Proper network

connection to the DDS facility or to the network channel-terminating equipment

must be made at the far end of the cable.

9. If the network line and remote DSU are installed and tested, do a Remote

Loopback – a Test Pattern test.

10. If the Front Panel test switch strap is to be disabled, slide the DSU slightly out of

the carrier, open Switch S3-1, then reseat the DSU into the carrier.

Do this now

.

11. Circuit ID information can be written on the cover plate under the appropriate slot

number.

Contents

Main Copyright 1999 Paradyne Corporation. All rights reserved. Printed in U.S.A. Notice Warranty, Sales, Service, and Training Information Service & Support Warranty Registration Document Feedback COMSPHERE 3550 SERIES DATA SERVICE UNITS MODELS 3550 AND 3551 Quick Reference Document Number 3550-A2-GL10-10 March 1999 Warranty Registration Service & Support Important Safety Instructions Changing the Model 3550 DSU Hardware Straps Table 1. Model 3550 DSU Switch Settings Installing the Model 3550 DSU Connecting the Model 3550 DSU to the NMS NMS NETWORK CONNECTION Connecting the Model 3550 DSU to the Dial Network (PSTN) Connecting the Model 3550 DSU to the DDS (or LADS) Network NOTE: No Signal Connecting the Model 3550 DSU to a DTE Connecting the Model 3550 DSUs Port 2 General Configuration Options Changing the Model 3551 DSU Hardware Straps Table 2. Model 3551 DSU Switch Settings Table 3. Model 3551 DSU Jumper Straps Installing the Model 3551 DSU Page 25-Pin Connector V.35 Adapter V.35 Cable Thumbscrews . Connecting the Model 3551 DSU to the NMS COMSPHERE 3000 Series Carrier Installation Manual Connecting the Model 3551 DSU to the Dial Network (PSTN) COMSPHERE 3000 Series Carrier Installation Manual Connecting the Model 3551 DSU to the DDS (or LADS) Network To Connect the SDCP to a DSU Carr:Slot: 1: 01 A 1:0 2A 1:01 A DSU 9.6 C Local Remot Msg Addressing the Unit NOTES: . Power-Up Routine " Run Test on Save to Load from Configuration Options Page Page Page !Important Safety Instructions Notices Government Requirements Notice to Users of the Digital Data Service Warranty, Sales, Service and Training Information Interface Code Data Rate Technical Specifications (bps)