Paradyne COMSPHERE 3550 Series Manuale utente
COMSPHERE
3550 SERIES
DATA SERVICE UNITS
MODELS 3550 AND 3551
QUICK REFERENCE
Document No. 3550-A2-GL10-10
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,
mechanical, magnetic, manual or otherwise, or disclosed to third parties without the
express written permission of Paradyne Corporation, 8545 126th Ave. N., Largo,
FL 33773.
Paradyne Corporation makes no representation or warranties with respect to the
contents hereof and specifically disclaims any implied warranties of merchantability or
fitness for a particular purpose. Further, Paradyne Corporation reserves the right to
revise this publication and to make changes from time to time in the contents hereof
without obligation of Paradyne Corporation to notify any person of such revision or
changes.
Changes and enhancements to the product and to the information herein will be
documented and issued as a new release to this manual.
Warranty, Sales, Service, and Training Information
Contact your local sales representative, service representative, or distributor directly for
any help needed. For additional information concerning warranty, sales, service, repair,
installation, documentation, training, distributor locations, or Paradyne worldwide office
locations, use one of the following methods:
Internet: Visit the Paradyne World Wide Web site at www.paradyne.com. (Be
sure to register your warranty there. Select
Service & Support
→
Warranty
Registration
.)
Telephone: Call our automated system to receive current information by fax or to
speak with a company representative.
— Within the U.S.A., call 1-800-870-2221
— Outside the U.S.A, call 1-727-530-2340
Document Feedback
We welcome your comments and suggestions about this document. Please mail them
to Technical Publications, Paradyne Corporation, 8545 126th Ave. N., Largo, FL 33773,
document in your correspondence. Please include your name and phone number if you
are willing to provide additional clarification.
Trademarks
All products and services mentioned herein are the trademarks, service marks,
registered trademarks or registered service marks of their respective owners.
496-15149
TM
1
COMSPHERE 3550 SERIES DATA SERVICE UNITS
MODELS 3550 AND 3551
Quick 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 the
documentation for specific topics and print only what you need, reducing the waste of
surplus printing. It also helps us maintain competitive prices for our products.
Complete documentation for this product is available at www.paradyne.com.
Select
Library
→
Technical Manuals
→
Subrate Digital Access Devices
.
Then select the following document:
3550-A2-GB20
COMSPHERE 3550 Series Data Service Units,
Models 3550 and 3551, User’s Guide
To request a paper copy of a Paradyne document:
Within the U.S.A., call 1-800-PARADYNE (1-800-727-2396)
Outside the U.S.A., call 1-727-530-8623
Installation
!HANDLING PRECAUTIONS FOR STATIC-SENSITIVE DEVICES
This product is designed to protect sensitive components from
damage due to electrostatic discharge (ESD) during normal
operation. When performing installation procedures,
however, take proper static control precautions to
prevent damage to equipment. If you are not sure
of the proper static control precautions, contact
your nearest sales or service representative.
Before installing your DSU, read the
Important Safety Instructions
on page 23.
Be sure to register your warranty at www.paradyne.com. Select
Service & Support
→
Warranty Registration
.
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.
Table 1 shows the DSU’s settings.
Procedure
1. With your thumbs under the edge of the front bezel, firmly press upward to lift the
bezel from the tabs securing it in place.
2. Swing the front bezel up and set the bezel aside.
3. Refer to Table 1 to determine which switch needs to be changed. Then, using a
small instrument, carefully change the position of the switch.
4. Reinsert the front bezel’s hinge tabs into position and swing the bezel down. Snap
the bezel back into place.
496-14457-01
SWITCH 1 HINGE TAB
LOCATIONS
FRONT BEZEL
COMSPHERE 3550
SNAP
TABS
3
Table 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
resistor
ON is to the rear as you face the front of the DSU.
Off is to the front.
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.
Procedure
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’s circular plug into the interface
labeled POWER.
3. Plug the ac transformer’s 3-prong plug into the ac wall outlet.
!WARNING:
Only use the power transformer designed for the Model 3550 DSU. Using
other transformers may result in personal injury or damage to the equipment.
EIA-232-D/V.24
Interface
V.35 Interface
NMS Jack
DBM Jack
DDS Jack
Low Voltage
AC Power In
99-16243
Tabletop
AC Transformer
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.
Procedure
1. Plug the 4-pin modular plug of the 3600 Hubbing Device into the DSU jack labeled
CC/DC.
2. Plug one end of an M6BJ cable into the hubbing device jack labeled CC IN/DC
OUT.
3. Plug the other end of the 8-pin M6BJ cable into the 8-pin end of the 873A adapter.
4. Plug the D-type end of the 873A adapter into the appropriate 6700 Series NMS
jack.
Refer to your COMSPHERE 6700 Series NMS documentation to control and configure
the DSU from the NMS.
496-14576a
NMS NETWORK
CONNECTION
CC/DC
HUBBING
DEVICE
LOW VOLTAGE
AC POWER IN
TO
NMS (873A)
3000HUBBING DEVICE
MODEL #3000-F3-300
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
— Programmable
service – telephone cord with 8-pin RJ45S plug
2. Plug the other end of the cable into the modular jack provided by the telephone
company, USOC RJ11C (permissive) or USOC RJ45S (programmable).
3. If your site has programmable service, verify that the DSU’s hardware strap S1-1 is
switched to the Off position.
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, NFPA 70, in the United States and Section 60 of the
Canadian Electric Code, Part 1, in Canada.
Follow these steps.
Procedure
1. Plug the DDS network interface cable into the DSU jack labeled LINE.
— U.S.
– select either end of the cable
— Canada – select the 8-pin end
2. Plug the other end of the cable into the modular jack (USOC RJ48S) provided by
the circuit provider.
If the remote DSU is also connected to the network, the DSU’s green OK indicator lights
and the Alrm indicator goes off. The Health and Status screen no longer displays a
No Signal
message.
If connecting the DSU to a LADS network, note that there are distance limitations that
govern the use of DSUs on the network. See the User’s Guide for specific information.
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). You 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 to be used as Port 2. This is a
D-type connector. If the port is to operate at a speed greater than 19.2 kbps, use the
V.35 adapter to provide an interface between the TDM/Flex’s D-type connector and the
DTE cable’s V.35 connector.
Be sure to select the appropriate cable (EIA-232 or V.35) for your application.
Procedure
1. Connect the plug end of the DTE cable to Port 1, either the EIA-232-D or the V.35
connector. Tighten the two holding screws.
2. Connect the other end of the cable to the appropriate port on the computer or DTE.
Tighten any holding screws.
3. If necessary, activate the port to match the interface: EIA-232 or V.35. The default
setting is EIA-232.
V.35 Interface
(Port 1)
EIA-232-D/V.24
Interface (Port 1) EIA-232
Interface
(Port 2)
DSU with
TDM/FLEX
99-16299
To DTE
EIA-232-D/V.24
Interface
V.35
Interface
Low Voltage
AC Power In
To DTE
DSU
V.35 Adapter
V.35 Cable
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