Specifications
installation
IM166-107
Common Audible And
Auxiliary Ringing Interface
You can use he relay closure dry-contact points for
controlling external audible equipment. These contact
closures track the pattern of the ringing for incoming
calls. The contacts are closed during the ringing
period and are open during the silent period.
A typical common audible connection is illustrated
on
Figure 3-9 .
piifq
Do not exceed a 1 amp at 24 volts (0.5 amp
at 48 volts) load on these control terminals.
If the load requirements exceed this limit,
connect the load through an external slave
relay. DO NOT CONNECT THESE
CONTROL TERMINALS DIRECTLY TO THE
117VAC
LINE.
Outside Lines
0
Common audible terminals provide a dry-contact
closure whenever any of the outside lines that you
have connected to the common equipment ring with
an incoming call.
Selected
Ports
0
Station
7
7 audible terminals provide a dry-contact
relay closure whenever ringing is sent to station 17
or to a programmable destination. Use class of
service programming to choose either station
17
or
the paging port as the ringing destination. Refer to
Chapter 4 for details.
When you have programmed for station port 17
ringing, it is a common practice to use a
customer-supplied external device to provide loud
ringing and connected in a manner similar to the
common audible arrangement shown in
Figure 3-9.
1
CAUTION
1
Do not connect a external paging amplifier
or any external ringing device to the
station port 17 connections.
0
When you have programmed forpaging port
tinging, it is a common practice to use a
customer-supplied external paging amplifier
connected to the paring port to amplify and
broadcast the ringing tones sent to, the paging port
by the system . You can employ the relay closures
that appear at the ringing terminals to energize the
external paging amplifier during the periods when
the ringing tones are being sent if necessary.
NOTE: Refer to the following paragraph headed
m
for a discussion of
external paging amplifier connections and
infotma tion for using the paging port ringing
tem?ina/s in an alternate paging eriable
function.
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