Installing The DXPT1 Digital Carrier Transmission Option
In The DXP Plus Digital Communications System
1.0 Introducing The DXPT1 Option
The digital carrier transmission option (DXPT1) gives the DXP Plus digital communications system the
capability to handle up to 24 channels of voice and/or data transmissions over a single four-wire cable using
multiplexing techniques in superframe (SF) or extended superframe (ESF) format. The DXPT1 board includes a
customer service unit (CSU) to eliminate the need for a CSU external to the DXP Plus.
Since the DXP Plus supports a maximum of 240 lines, and each DXPT1 board handles up to 24 channels, you can
install up to 10 DXPT1 boards in the DXP Plus system. You can install these 10 boards in any available universal
board slot in the main or expansion cabinets. Of course, any other line boards that you install, such as loop start,
DID or multipurpose, reduce the number of lines available for T1 service and thus reduces the number of DXPT1
boards that you can install.
Whenever you install one or more DXPT1 boards, and the DXP Plus is receiving its timing signals from an
external source, you must install one synchronization card (DXOPT–SYN) on the services board. When you
connect the system to central office (CO) lines, you must include a synchronization card, and the DXP Plus must
be controlled by CO signalling. In installations where the DXP Plus supplies the clock signal for the distant
system, there is no requirement for DXOPT–SYN cards.
If you plan to use tone dial configured DID or E&M lines with the T1 digital carrier transmission option, you will
need to install one or more DTMF receiver cards to the DXP Plus. Typically, you will need one DTMF receiver
for every six lines. This ratio indicates that you need to add one DTMF receiver card for each DXPT1 board that
is configured for 24 DID or E&M lines. In high traffic situations, you may need additional DTMF receiver cards.
For information on DTMF receiver card installation, see IMI89–186, Installing A DTMF Receiver In The DXP
Plus Digital Communications System.
NOTE: The DTMF receiver cards that you add for this purpose are in addition to any you may add to the system
to support industry-standard telephone station boards
If you are unfamiliar with the terms and component names associated with the T1 digital carrier transmission
option, refer to glossary of terms presented in Section 8 located at the end of this publication.
CAUTION
For operation with the DXP Plus, the T1 board must be Revision B or higher. If the T1 board that you are
installing is a lower revision, contact Comdial Technical Services (1–800–366–8224) for advice before
you proceed with the installation..
R
This manual has been developed by Comdial Corporation (the “Company”) and is intended for the use of its customers and service personnel. The information in this manual is subject to change
without notice. While every effort has been made to eliminate errors, the Company disclaims liability for any difficulties arising from the interpretation of the information contained herein.
The information contained herein does not purport to cover all details or variations in equipment or to provide for every possible contingency to be met in connection with installation, operation, or
maintenance. Should further information be desired, or should particular problems arise which are not covered sufficiently for the purchaser’s purposes, contact Comdial, Inside Sales Department,
Charlottesville, Virginia 22906.
Printed in U.S.A.
IMI89-193.01
7/95
Содержание DXP Plus Series
Страница 1: ...Digital Communications System R ...
Страница 363: ...Automatic Call Distributor Technical Manual R QuickQ DXP ...
Страница 424: ...Automatic Call Distributor System Manager s Guide R QuickQ DXP ...
Страница 500: ...Wrap up Time 1 6 Wrapping Up A Call 4 3 Z Zoom Box A 2 GCA70 271 Index I 3 ...
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Страница 677: ...Connecting The Equipment Installing And Programming The OPX X IMI89 209 Installing The OPX X 7 ...
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