Comdial DXP Plus Series, Руководство пользователя

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4.0 Understanding The Federal Communications
Requirements Concerning DID Lines
The Federal Communications Commission (FCC) requires that you inform the central office (CO) that the DXP
Plus is configured as an MF (multipurpose) registered device if you connect it to ground start DID lines. Also,
FCC rules, part 68, require customer premise equipment (CPE) to return answer supervision signalling to the CO
for DID calls. Allowing the DXP Plus to be operated in a manner that does not provide answer supervision is a
violation of these rules. In compliance to this ruling, the DXP Plus system returns DID answer supervision no
later than 500 milliseconds after the incoming call is serviced. The regulations require that the system return this
answer supervision whenever the following DID call conditions exist:
•
call answered by the called station,
•
call answered by the attendant,
•
call routed to a recorded announcement that can be administered by a system user,
Exceptions to the requirement are when:
•
a call is not answered,
•
a busy tone is received,
•
a reorder tone is received.
4.1 Understanding Installer/User Information
Regarding FCC Rules And Regulations
This DXP Plus digital communications system complies with Federal Communications Commission (FCC)
Rules, Part 68. The FCC registration label on the KSU contains the FCC registration number, the ringer
equivalence number, the model number, and the serial number or production date of the system.
Notification To Telephone Company
Unless a telephone operating company provides and installs the system, the telephone operating company which
provides the lines must be notified before a connection is made to them. The lines (telephone numbers) involved,
the FCC registration number, and the ringer equivalence number must be provided to the telephone company.
The FCC registration number and the ringer equivalence number of this equipment are provided on the label
attached to the common equipment. The user/installer is required to notify the telephone company when final
disconnection of this equipment from the telephone company line occurs.
Compatibility With Telephone Network
When necessary, the telephone operating company provides information on the maximum number of telephones
or ringers that can be connected to one line, as well as any other applicable technical information. The telephone
operating company can temporarily discontinue service and make changes which could affect the operation of this
equipment. They must, however, provide adequate notice, in writing, of any future equipment changes that would
make the system incompatible.
Installation Requirements
Connection of the electronic key system to the telephone lines must be through a universal service order code
(USOC) outlet jack supplied by the telephone operating company. If the installation site does not have the proper
outlet, ask the telephone company business office to install one. The correct outlet jack for this is a type RJ21X.
IMI89–191 Installing The DID Line Board
12 – Installing The DID Line Board