GAI-Tronics 227-005 SMART Auto-Dial Handset Telephones - Manual (Page 9)

Pub. 42004-443C
SMART A UTO -D IAL H ANDSET T ELEPHONES P AGE
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02/13
High Noise Area Installation
Installing a SMART Telephone in a high noise area may require the use of an external audible or visual
device for ringing notification. Utilizing one of these devices differs from an installation utilizing a
standard analog telephone. Typical analog telephones utilize the telephone line ring voltage (90 V ac) to
activate the ringer in the telephone. Typical installation of a peripheral ring notification device for a
standard analog telephone would include connecting a ring relay across the telephone line and using it to
activate the notification device.
Each SMART Telephone, however, is factory programmed for auto answer. In this mode, the SMART
Telephone utilizes the telephone line ring voltage for only a fraction of a second to auto answer and
activate its own internal circuitry. The SMART Telephone then creates its own ringing audible signal, no
longer requiring the line ring voltage. If an external device is required for ringing notification in a
SMART Telephone installation, it should be connected to one of the SMART Telephone’s two external
outputs. One of these outputs can be programmed to “follow the ringer” and provide opening and closing
with a standard ring cycle. This eliminates the need for a ring relay and allows a standard bell or
strobe/light to be used for notification. (An interposing relay may be required depending on the device’s
current requirement.)
N OTE : If multiple -005 SMART series telephones are connected to a single line and are configured not
to auto answer, a standard analog telephone application now exists. This means that an external ringing
notification would require the installation of a ring relay device as previously mentioned for typical
analog telephone operation. Refer to the “Auto-answer Configuration” section on page 19 for details on
disabling the auto-answer function.