ViewSonic VB1200 manual 附录 a 使用手册

附录 A 使用手册

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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