Comdial DXP Plus Series, Руководство пользователя

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Installing An Industry-Standard Telephone Station Board
In The DXP Plus Digital Communications System
1.0 Understanding Industry-Standard Telephone Support
The DXP Plus digital communications system supports the use of on-premise industry-standard telephones (IST)
through IST station interface boards. IST installations require a ring generator assembly—one required for the
main common equipment cabinet and another one in each expansion common equipment cabinet. Plus, IST
installations may require a dual tone multiple frequency (DTMF) receiver card if additional DTMF receivers are
required beyond the one provided by the services board.
1.1 Detailing The Necessary Equipment
Regardless of the number of industry-standard telephones that you plan to install, you will need to install the
following equipment:
•
at least one IST station interface board,
•
one ring generator assembly for each equipment cabinet that will contain IST station interface boards,
•
at least one line interface circuit board
The DXP Plus services board provides on-board DTMF receiver circuitry capable of supporting simultaneous
dialing of one industry-standard telephone at a time. This provision is adequate if your site requires only a few
industry-standard telephones; however, if you intend to support a population of industry-standard telephones that
will generate a large volume of outgoing call traffic, you may need to install one or more DTMF receiver cards to
provide additional DTMF receivers for the telephones. Each receiver card allows four ISTs to dial simultaneously.
The number of cards that you need to install in the system depends upon how active the ISTs will be at the site.
See section 1.2 for complete details.
If you do need to add receiver cards, you have three choices as to where to install them.
1. The best and recommended choice is to add one receiver card to top position on the main cabinet’s services
board.
NOTE: You can add two additional receiver cards to the lower two positions on the services board; however, you
must take specific programming action to enable their use (the name of this program option is: Services
DTMF Highway). If you add these two cards and take this program option, you can add only one card to
the interface board in the lower expansion cabinet (discussed in step 2 below).
2. The second best choice is to add up to three receiver cards to each expansion cabinet interface board if one or
both is available. Remember, add only one card to the lower cabinet’s interface board if you have added or
will add two additional receiver cards to the lower two positions on the services board and take programming
action to enable their use
3. The third choice is to add an auxiliary board to the system and install up to four DTMF receiver cards on it.
This is the least desirable choice because it requires you to occupy a board slot that you could otherwise use
for line or station boards.
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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. IMI89-184.01
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