If this modem is to be used with a PBX which returns secondary proceed
indication, no more than two pauses of four seconds duration each should be
inserted between the initial PSTN access digit and the number to be dialed.
This is to avoid interference to the PTO network.
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
authorised maintainer of the PBX unless the authorised maintainer has been given
14 days written notice that the connection is to be made by another person, and
that period of notice has expired.
This modem is suitable for use only on telephone lines provided 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 working 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.
Ringer Equivalence Number
The ringer equivalence number (REN) of this modem is 1. REN is a guide to the
maximum number of apparatuses that can be simultaneously connected to one
telephone line. The REN value of each apparatus is added together, and should
not exceed 4. Unless otherwise marked, a telephone can be assumed to have a
REN value of 1.
Approved Usage
This modem is approved only for the following:
Storage of telephone numbers for retrieval by a predetermined code
■
Detection of initial proceed indication
■
Automatic calling/Automatic answering
■
Tone detection
■
Operation in the absence as a secondary proceed indication
■
Loudspeaking facility
■
This modem is NOT suitable for use as an extension to a payphone.
This modem is not approved for connection to UK private speechband services.
This modem does not support the automatic redial function.
Any other usage will invalidate the approval of your modem, if, as a result, it then
ceases to conform to the standards against which approval was granted.
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