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IP Office Installation
Page 353
15-601042 Issue 20b (16 July 2009)
IP Office
System Components: Physical Ports
10.12.2 ANALOG Port
These ports are analog trunk ports. The IP400 ATM4 analog trunk cards and IP500 analog trunk cards only support loop-
start trunks. The ATM16 Analog Trunk module supports both loop-start and ground-start trunks, switchable within the IP
Office configuration.
ANALOG
Pin
Description
1
Not used.
2
Not used.
3
Not used.
4
Ring.
5
Tip.
6
Not used.
7
Not used.
8
Not used.
•
Off-Hook Current: 25mA.
•
IMPORTANT
In all IP Office installations, any module being used for analog trunk connections must be connected to a
functional
earth
.
•
WARNING
Within the Republic of South Africa and in areas of high lightning risk, any module using analog trunk connections must
be connected to a
protective ground
and to
surge protection equipment
.
10.12.3 AUDIO Port
This port is found on the rear of all IP Office control units. It is used for the input of an external music-on-hold sound
source. Note that if the IP Office has loaded an internal music-on-hold sound file, any input from this socket is ignored.
The port is a 3.5mm stereo jack socket suitable for use with the most standard audio leads and connection to the
'headphone' output socket of most audio systems.
The use of a 'headphone' socket allows simple volume adjustment. Connection via a 'Line Out' socket may require
additional equipment in order to adjust the volume level.
Pin No.
Description
Common
Common
Left
Audio In - Left Channel.
Right
Audio In - Right - Channel.
•
Input impedance: 10k /channel. Maximum a.c. signal – 200mV rms.
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