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Paradyne 3550 - page 1
COMSPHERE 3550 SERIES DA T A SERVICE UNITS MODELS 3550 AND 3551 QUICK REFERENCE Document No. 3550-A2-GL10-10 ...
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Paradyne 3550 - page 2
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 be copied or distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in any form or by any means, electronic, m ...
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Paradyne 3550 - page 3
496-15149 TM 1 COMSPHERE 3550 SERIES DA T A SER VICE UNITS MODELS 3550 AND 3551 Quick Reference Document Number 3550-A2-GL10-10 March 1999 Product Documentation on the W orld Wide W eb We provide complete product documentation online. This lets you search the documentation for specific topics and print only what you need, reducing the waste of surp ...
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Paradyne 3550 - page 4
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 programmable connection when a DBM is installed, and one that controls the frame-to-signal grounds. T able 1 shows the DSU’s settings. Procedur e ...
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Paradyne 3550 - page 5
3 T able 1. Model 3550 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 –12 dBm and 0 dBm S1 2 ON Frame ground (FG) connected to signal ground (SG) S1-2 Off (default) FG connected to SG through 100 ohm resisto ...
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Paradyne 3550 - page 6
4 Installing the Model 3550 DSU Before installing the DSU, label the circuit breaker that protects the ac wall outlet, and make sure that it is set to ON. Then, proceed with the installation. Procedur e 1. Place the DSU in its planned location. Make sure the ventilation slots are not blocked. 2. At the rear of the DSU, insert the ac transformer ...
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Paradyne 3550 - page 7
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 NMS rather than from the DCP alone. Procedur e 1. Plug the 4-pin modular plug of the 3600 Hubbing Device into the DSU jack labeled CC/DC. 2. ...
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Paradyne 3550 - page 8
6 Connecting the Model 3550 DSU to the Dial Network (PSTN) If your DSU is equipped with a V .32 DBM, follow these steps. Procedur e 1. Plug either end of the dial (analog) interface cable into the DSU jack labeled BACKUP . — Permissive service – telephone cord with 6-pin modular RJ1 1C plug — Programmable service – telephone cord with 8 ...
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Paradyne 3550 - page 9
7 Connecting the Model 3550 DSU to the DDS (or LADS) Network NOTE: Before connecting the DSU to the DDS network, ensure that approved primary protectors have been installed on the circuit in accordance with Article 800 of the National Electric Code, NFP A 70, in the United States and Section 60 of the Canadian Electric Code, Part 1, in Canada. Foll ...
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Paradyne 3550 - page 10
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-T V .35 connector (used for higher operating speeds). Y ou can use either interface. When the unit is equipped with a TDM/Flex, either of these interfaces can be used as Port 1. The TDM/Flex provides an additional interface t ...
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Paradyne 3550 - page 11
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. Procedur e 1. Reconfigure the port for a V .35 interface. See General Configuration Options on page 21. 2. Connect the 25-pin plug end of the V .35 adapter (Feature ...
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Paradyne 3550 - page 12
10 T able 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 –12 dBm and 0 dBm ON Frame ground (FG) connected to signal ground (SG) S1-2 Off (default) FG connected to SG through 100 ohm resistor ON ...
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Paradyne 3550 - page 13
11 T able 3. Model 3551 DSU Jumper Straps Strap Designation State of Jumper Strap Function J12 Left V .35 T est Mode Indication: Left — Enables V .35 T est Mode Indication (Pins 1 and 2). This is the factory default. Right — Disables V .35 T est Mode Indication (Pins 2 and 3). J13 Left EIA-232-D T est Mode Indication: Left — Enables EIA-232-D ...
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Paradyne 3550 - page 14
12 Installing the Model 3551 DSU The initial installation procedure for the Model 3551 DSU requires the installation of a rear connector plate onto the rear of the COMSPHERE 3000 Series Carrier . After the initial installation, the DSU can be installed or uninstalled by simply removing the DSU from the carrier . Procedur e 1. At the rear of the ...
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Paradyne 3550 - page 15
13 5. At the front of the carrier , hold the DSU vertically with the latch on its faceplate in the open position. Then, insert the circuit card into the top and bottom circuit card guides for the slot that contains the rear connector plate. Slide the DSU into the slot, aligning the circuit card with the rear connector plate until the connectors sea ...
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Paradyne 3550 - page 16
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. T o connect a V .35 adapter to ...
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Paradyne 3550 - page 17
15 Connecting the Model 3551 DSU to the NMS A Model 3551 DSU is set up for network diagnostic connection through the shared diagnostic unit (SDU), which is installed in Slot 0 of the carrier . Refer to the COMSPHERE 3000 Series Carrier Installation Manual , Document No. 3000-A2-GA31, to set up the network diagnostic connection. For connection of th ...
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Paradyne 3550 - page 18
16 T o Connect the SDCP to a DSU For the carrier-mounted Model 3551 DSU, the SDCP must first be reconnected to the DSU. Once connected, the SDCP operates like a DCP . Procedur e 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 positioned under the second position of t ...
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Paradyne 3550 - page 19
17 Addressing the Unit A unique address must be assigned to each control and tributary DSU in your network. Y ou 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 255 cannot be assigned to a DSU that has a DBM ...
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Paradyne 3550 - page 20
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 T est on itself and each of the installed options. During the tests, all indicators on the DCP light briefly and the message Power-Up T ests appears on the liquid crystal display (LCD). H Displays the results of e ...
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Paradyne 3550 - page 21
19 Configuration Options Configuration options are accessed from the Configuration branch of the front panel menu. In the following tables, factory defaults are shown in boldface . If they differ from each other , defaults are shown for PTPC, PTPT , MPTC, and MPTT . Key to symbols: These configuration options do not appear when Full mode is dis ...
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Paradyne 3550 - page 22
20 Diagnostic General Configuration Options V alue Position Cntrl (PTPC, MPTC), T rib (PTPT , MPTT) LinkConfg Pt-Pt (PTPC, PTPT), M-Pt (MPTC, MPTT) Resp Period 1 , 2, 10 T ribTimOut 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 Configuration Options V a ...
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Paradyne 3550 - page 23
21 General Configuration Options V alue DTE Port EIA232 , V .35 RTS Cntrl FrcOn (PTPC, PTPT , MPTC), DTE (MPTT) CTS Cntrl Std , = RTS, Delay , FrcOn AntiStream Disab , 1 – 100 sec LSD Lead Std , Delay , FrcOn DSR FrcOn Enab , Disab SystemStat Enab , Disab DSR on T st Enab , Disab Circ Assur Enab, Disab RespondRDL Enab ...
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Paradyne 3550 - page 24
22 MUX Port Configuration Options V alue DTE Port EIA232 , V .35 Async → Sync Enab, Disab Async Rate =Sync , 1800, 1200, 600, 300, 150 AsyncBit/Char 6, 7, 8 , 9, 10 Stop Bits 1 , 2 Overspeed 1.25, 2.5 RTS Cntrl FrcOn, DTE TxCarrSel Const , Cntrl RxCarrSel Const , Cntrl, Mark PCC Buffer Enab, Disab Elast Stor Enab, Disab RTS/CTS Del ? ...
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Paradyne 3550 - page 25
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 vital to ensure safe operation. Do not defeat the ...
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Paradyne 3550 - page 26
24 Notices ! W ARNING: ? ...
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Paradyne 3550 - page 27
25 If your DSU causes harm to the telephone network, the telephone company may discontinue your service temporarily . If possible, they will notify you in advance. But if advance notice is not practical, you will be notified as soon as possible. Y ou will be advised of your right to file a complaint with the FCC. If your DSU causes harm to the tele ...
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