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2. OPERATION
Dialing and Storing Telephone Numbers
Introduction
After installing the ISDN Option Type 40, you must be careful to select the correct
signaling type (Group 3 or Group 4) when dialing, or when storing a telephone
number as a Speed Dial or Quick Dial.
The G4/G3 Selector key on the operation panel allows you to select whether the
telephone number is to be dialed using Group 3 (G3) or Group 4 (G4). An indica -
tor above the key will light to show which has been selected.
To change the setting, press the key until the required indicator is lit. In most
cases, <G3> (Group 3) or <G4> (Group 4) will appear on the display as a refer -
ence while you are entering a telephone number.
CAUTION: When you dial a number using a Quick Dial or Speed Dial, or
using AI Redial, check the two indicator lamps above the G4/G3
selector key to make sure that the correct mode is selected. If it is
not correct, press the G4/G3 selector key until the correct indicator
is lit.
Notes: ❐ Your machine is set up to send to Group 3 fax machines over the regu -
lar telephone network (the PSTN, the Public Switched Telephone Net -
work). If you wish to send to Group 3 machines over the ISDN, contact
your service representative.
❐ When dialing a fax machine or telephone over an ISDN, the destination
may have a subaddress number. This number can be thought of as
similar to an extension number on a PBX. If the destination telephone
or fax machine has a subaddress number, input this number when dial -
ing. You can get this number from your contact at that location.
APPENDIX C. ISDN OPTION TYPE 40
C-2