ViewSonic VB1200 User Manual page 40

附录 A
This modem is also suitable for connection to Private Automatic Branch Exchange (PABX),
which return secondary proceeding indication.
If this modem is to be used with a PBX which has extension wiring owned by BT,
connection of the modem to the PBX can only be carried out by BT; or by the authorized
maintainer of the PBX unless the authorized maintainer has been given 14 days written
notice that the connection is to be made by another person; and that period of notification
has expired.
This modem is suitable for use only on telephone lines approved with Loop Disconnect or
Multi-Frequency Dialing Facilities.
Users of this modem are advised that the approval is for connection to the PSTN via the
telephone line interface supplied with it. Connection of a modem to the PSTN by any other
means will invalidate the approval.
There is no guarantee of correct functioning in all circumstances. Any difficulties should be
referred to your supplier.
Some network operators require that intended users of their network request permission to
connect and for the installation of an appropriate socket.
The Ringer Equivalence Number (REN) of this modem is 1. REN is a guide to the
maximum number of apparatus that can simultaneously be connected to one telephone line.
The REN value of each apparatuses is added together, and should not exceed 4. Unless
otherwise marked, a telephone is assumed to have a REN of 1.
This modem is only approved for use of the following facilities:
•
Storage of telephone numbers for retrieval by a predator mined code.
•
Initial proceed indication detection.
•
Automatic calling / automatic answering.
•
Tone detection.
•
Loud-speaking facility.
This modem is not approved for connection to U.K./private speech-band services. This
modem does not support an automatic re-dial function. Any other usage will invalidate the
approval of your modem, if as a result, it then ceases to confirm to the standards against
which approval was granted. The approval of this modem is invalidated if the apparatus is
subject to modification in any material way not authorized by the BABT or if it is used
with, or connected to external software that has not been formally accepted by BABT.
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