Page 2 - Warranty; Document Feedback
Copyright 1999 Paradyne Corporation. All rights reserved.Printed in U.S.A. Notice This publication is protected by federal copyright law. No part of this publication may becopied or distributed, transmitted, transcribed, stored in a retrieval system, or translatedinto any human or computer language ...
Page 3 - Product Documentation on the World Wide Web; HANDLING PRECAUTIONS FOR STATIC-SENSITIVE DEVICES
496-15149 TM 1 COMSPHERE 3550 SERIES DATA SERVICE UNITSMODELS 3550 AND 3551Quick Reference Document Number 3550-A2-GL10-10 March 1999 Product Documentation on the World Wide Web We provide complete product documentation online. This lets you search thedocumentation for specific topics and print only...
Page 4 - bezel from the tabs securing it in place.; Swing the front bezel up and set the bezel aside.; small instrument, carefully change the position of the switch.; SWITCH 1
2 Changing the Model 3550 DSU Hardware Straps The Model 3550 DSU has a switch located behind its diagnostic control panel (DCP).This switch contains two straps, one that controls the permissive or programmableconnection when a DBM is installed, and one that controls the frame-to-signal grounds.Table...
Page 5 - Table 1. Model 3550 DSU Switch Settings; Switch Position; ON
3 Table 1. Model 3550 DSU Switch Settings Switch Position Switch Setting Function S1 1 ON (default) Permissive V.32 DBM transmit output levelof –9 dBm S1-1 Off Programmable V.32 DBM transmit levelbetween –12 dBm and 0 dBm S1 2 ON Frame ground (FG) connected to signalground (SG) S1-2 Off (default) FG...
Page 6 - Plug the ac transformer’s 3-prong plug into the ac wall outlet.
4 Installing the Model 3550 DSU Before installing the DSU, label the circuit breaker that protects the ac wall outlet, andmake sure that it is set to ON. Then, proceed with the installation. Procedure 1. Place the DSU in its planned location. Make sure the ventilation slots are not blocked. 2. At th...
Page 7 - NMS NETWORK; HUBBING
5 Connecting the Model 3550 DSU to the NMS A 3600 Hubbing Device is required to connect the control DSU to the 6700 Series NMS.When connected to the NMS, the DSU can be controlled and configured from the NMSrather than from the DCP alone. Procedure 1. Plug the 4-pin modular plug of the 3600 Hubbing ...
Page 8 - — Permissive
6 Connecting the Model 3550 DSU to the Dial Network (PSTN) If your DSU is equipped with a V.32 DBM, follow these steps. Procedure 1. Plug either end of the dial (analog) interface cable into the DSU jack labeled BACKUP. — Permissive service – telephone cord with 6-pin modular RJ11C plug — Programmab...
Page 9 - – select either end of the cable
7 Connecting the Model 3550 DSU to the DDS (or LADS) Network NOTE: Before connecting the DSU to the DDS network, ensure that approved primaryprotectors have been installed on the circuit in accordance with Article 800 of theNational Electric Code, NFPA 70, in the United States and Section 60 of theC...
Page 10 - DSU
8 Connecting the Model 3550 DSU to a DTE The DSU’s rear panel has both a 25-pin EIA-232-D/V.24 connector and a 34-pin ITU-TV.35 connector (used for higher operating speeds). You can use either interface. When the unit is equipped with a TDM/Flex, either of these interfaces can be used asPort 1. The ...
Page 11 - Rear
9 Connecting the Model 3550 DSU’s Port 2 For the EIA-232 cable, install as described above. For the V.35 cable, install the V.35 adapter, then the V.35 DTE cable as follows. Procedure 1. Reconfigure the port for a V.35 interface. See General Configuration Options on page 21. 2. Connect the 25-pin pl...
Page 12 - Table 2. Model 3551 DSU Switch Settings; Switch
10 Table 2. Model 3551 DSU Switch Settings Switch Position Switch Setting Function S1 1 ON (default) Permissive V.32 DBM transmit output level of –9 dBm S1-1 Off Programmable V.32 DBM transmit level between –12dBm and 0 dBm ON Frame ground (FG) connected to signal ground (SG) S1-2 Off (default) FG c...
Page 13 - Table 3. Model 3551 DSU Jumper Straps
11 Table 3. Model 3551 DSU Jumper Straps Strap Designation State of Jumper Strap Function J12 Left V.35 Test Mode Indication: Left — Enables V.35 Test Mode Indication (Pins 1 and 2). This is the factory default. Right — Disables V.35 Test Mode Indication (Pins 2and 3). J13 Left EIA-232-D Test Mode I...
Page 17 - Connecting the Model 3551 DSU to the DDS (or LADS) Network; COMSPHERE 3000 Series Carrier
15 Connecting the Model 3551 DSU to the NMS A Model 3551 DSU is set up for network diagnostic connection through the shareddiagnostic unit (SDU), which is installed in Slot 0 of the carrier. Refer to theCOMSPHERE 3000 Series Carrier Installation Manual, Document No. 3000-A2-GA31,to set up the networ...
Page 18 - Press the Select key on the SDCP again.
16 To Connect the SDCP to a DSU For the carrier-mounted Model 3551 DSU, the SDCP must first be reconnected to theDSU. Once connected, the SDCP operates like a DCP. Procedure 1. Press the Select key. A screen similar to the following appears. F1 F2 F3 Carr:Slot: 1: 01 A 1:0 2 A The cursor is usually ...
Page 19 - Addressing the Unit
17 Addressing the Unit A unique address must be assigned to each control and tributary DSU in your network.You can assign an address within the range of 1 through 255. NOTES: — Do not assign the number 192 as a network address. This number is reserved as a broadcast address. — The numbers 191 and 25...
Page 20 - Procedure; Press the function key directly below Confg.
18 Power-Up Routine When power is applied, the DSU: H Determines what options (DBM or TDM/Flex) are installed, if any. H Runs a Device Test on itself and each of the installed options. During the tests, all indicators on the DCP light briefly and the message Power-UpTests appears on the liquid cryst...
Page 21 - Configuration Options
19 Configuration Options Configuration options are accessed from the Configuration branch of the front panelmenu. In the following tables, factory defaults are shown in boldface. If they differ from eachother, defaults are shown for PTPC, PTPT, MPTC, and MPTT. Key to symbols: These configuration opt...
Page 22 - Value
20 Diagnostic General Configuration Options Value Position Cntrl (PTPC, MPTC), Trib (PTPT, MPTT) LinkConfg Pt-Pt (PTPC, PTPT), M-Pt (MPTC, MPTT) Resp Period 1, 2, 10 TribTimOut 0:10 (5 sec to 10 min) Link Delay 0s, 1s, 2s, 5s, 10s, 20s, 50s Packet Delay 0s, 1s , 2s, 5s M-PtSymPrt Enab, Disab DBM Con...
Page 25 - Important Safety Instructions; included in the manual.
23 ! Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. This product is intended to be used with a 3-wire grounding type plug – a plug which has a grounding pin. This is a safety feature. Equipment grounding is vi...
Page 26 - Notice to Users of the Digital Data Service
24 Notices ! WARNING: ! WARNING: ! Government Requirements The Federal Communications Commission (FCC) requires that instructions pertaining toconnection to the telephone network be included in the installation and operationmanual. Specific instructions are listed in this section. Notice to Users of...
Page 27 - Warranty, Sales, Service and Training Information in the front of; Interface; Technical Specifications in
25 If your DSU causes harm to the telephone network, the telephone company maydiscontinue your service temporarily. If possible, they will notify you in advance. But ifadvance notice is not practical, you will be notified as soon as possible. You will beadvised of your right to file a complaint with...
