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Place an intercom call to telephone you wish to monitor. Press MUTE if you want to prevent sounds in
your room from being heard at the monitored phone.
To end monitoring, hang up the handset or press SPEAKER. The remote station will disconnect immedi-
ately.
Note: The remote phone must be set to Intercom HANDSFREE.
6. Using standard telephones
You may also use standard (non-2740) telephones in conjunction with your 2740 telephones. All
features of the non-2740 telephones will operate normally. However, they will not be able to share
the features of the 2740 telephones.
6.1 Line Status and Calls on Hold
The line status indicators of the 2740 phones will recognize standard telephones. When a call is placed on
hold at a 2740 telephone, it can be taken off hold at a standard telephone.
Note: If the line status indicators of your 2740 telephones do not function properly , follow the instructions
for setting the loop voltage detector in Section 2.3.
6.2 Call Privacy
Call privacy is not observed by non-2740 telephones. A non-2740 telephone on any line has access to that
line at any time, whether or not it is being used by a 2740 telephone.
6.3 Intercom
Non-2740 telephones cannot use the intercom feature to communicate with 2740 telephones.
6.4 Fax Machines and Modems
You may connect modems or fax machines to any of your lines, and the line indicators of the 2740 tele-
phones will light when these devices are using a line.