Comdial DigiTech 7700S Series, Reference Manual

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3.4 Using Line Groups
Some systems have telephone lines arranged into line groups. These line
groups are available at each telephone. Your attendant can tell you how
your system is arranged. When line groups are available for your use,
you may access them for outside calling instead of pressing a line button
to select an individual line for use.
•
If your system has line groups, access them as follows:
1. Press INTERCOM.
2. Dial desired line group access code:
9 = line group 1
80 through 89 = line groups 2 through 11
60 through 64 = line groups 12 through 16
—OR—
press preprogrammed line group button.
3. Listen for outside dial tone.
4. Dial desired number.
5. Speak toward the telephone (lift handset if you desire privacy).
Making Calls GCA70–226
3 – 4 LCD Speakerphone Reference Manual