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Using Other Telephones With Your Telephone
Additional Information
Using standard telephones
You may use standard (non-SBC 4000) telephones in conjunction with your SBC 4000 tele-
phones. All features of the non-SBC 4000 telephones will operate normally. However, they will
not be able to share the features of the SBC 4000 telephones.
Line Status and Calls on Hold
The line status indicators of the SBC 4000 phones will recognize the standard telephones, and
when you place a call on hold at an SBC 4000 telephone, you will be able to take the call off hold
at a standard telephone.
Note: If the line status indicators of your SBC 4000 telephones do not function properly, either fail-
ing to light up when a standard telephone uses a line, or staying lit even though no telephone is
using a line, then please see page 73 and follow the instructions for setting the loop voltage detec-
tor.
Call Privacy
Call privacy is not observed by non-SBC 4000 telephones. A non-SBC 4000 telephone on any
line has access to that line at any time, whether or not it is being used by an SBC 4000 telephone.
Intercom
Non-SBC 4000 telephones cannot use the intercom feature to communicate with SBC 4000 tele-
phones.
Using fax machines and computer modems
You may connect computer modems or fax machines to any of your lines, and the line indicators
of the SBC 4000 telephones will light when these devices are using a line.
You may also connect fax machines and computer modems to Line 2 by connecting them to the
data/fax jacks. Use of the data/fax jack is discussed on the following page.
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