IP Server 900 Hardware Installation Manual
External connections
H.3
MOH port
The MOH (messages-, or music-, on-hold) connector — located on the Master Control Unit faceplate — is a
standard
1
/
8
″
monophonic mini-jack, used for loading custom MOH recordings or for playing live music-on-hold
from an external source such as a CD player.
External paging device connection
A dry-contact overhead-paging device can be connected to the IP Server 900 through the
RJ-11
OH Paging
connector, which is located on the front of the Master Control Unit
faceplate. Although this is a six-pin connector, only two pairs are needed between the
paging device and the connector:
•
To pin-out the connector for
normally open
operation, connect the
audio
wires to
pins 3 and 4
and the
control
pair to
pins 1 and 2
.
•
To pin-out the connector for
normally closed
operation, connect the
audio
wires to
pins 3 and 4
and the
control
pair to
pins 5 and 6
.
CO line connection
SIP COs
The IP Server 900 supports SIP COs via Universal IP (UIP) ports. Partial SIP applications are supported
through line programming.
Currently supported SIP COs are:
•
Broadvox
•
Cbeyond
•
Clearfly
•
Comporium
•
Cornerstone
•
Cox Cable
•
EasyTel
•
Genband
•
MetTel
•
Netcarrier
•
nTelos
•
1-VOIP
•
TCT
•
Vintalk
•
Voxitas
Local loop
The IP Server 900’s advanced CO line circuitry provides for open loop detection and the system’s built-in
Caller ID interface. Loop start lines are connected via the appropriate M1–M4 connector.
Note:
Observe correct order of connection to preserve proper rotary hunting of the CO lines.
In order to more accurately calibrate the system echo canceller algorithms to tune out echo on analog CO lines,
the system runs an FXO tuning routine during the initial boot of the system. This tuning process performs
some tests on the local loop to set values proactively so that calls are clear at the initial use of the system.
In order for these calibrations to run, it is imperative that each FXO line that is to be used is plugged in at
initial bootup. Failure to do so can result in severe echo or other audio disturbances. If this is not possible —
such as when the system is pre-built and programmed in a lab environment — it will be necessary to contact
ESI Technical Support after the system cutover to have the FXO tuning done manually by ESI personnel.