Appendices
63
Compliance with BS6789: Section 3.1 and Part 2
a. The modem is not capable of allowing Auto Call using '999' or other
PABX emergency numbers.
b. Modes other than modes 1, 2, or 3 should not be used on the BT
PSTN. This modem is a mode 1 device.
c. Users are advised to check the numbers entered during the Auto Call
set up phase prior to dialing.
d. The user should not issue any sequence of commands to the modem
which would cause the modem to exceed the maximum allowable
pause of 8 seconds from the time the modem goes off hook until
dialing begins.
e. For correct operation of the call progress monitor, the power has to
be properly connected and switched on.
Compliance with BS6328 Part 1
a. The modem is not suitable for use on circuits with British
Telecommunications signaling at a normal frequency of 2280 Hz.
b. The modem does not require signaling or otherwise employ the
frequency range dc to 200 Hz.
c. The modem may be connected to a point to point two-wire or four-
wire Private Circuit.
d. The modem does not require dc from the Private Circuit for correct
operation. The modem may be damaged if connected, in a private
circuit mode, to a circuit supplying dc current (the maximum permissible
direct current is zero amps).