2N Omega Lite - Installation Manual v1.9 - Manual (Page 22)

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5.4. Module 1x external line / 1x internal line (order No 1880031)
Combined module for connecting one analogue external (J2) and one analogue
internal line (J3). The module allows the receipt of caller identification (Caller ID
–
CLIP) using FSK modulation.
In the event of a power failure of the PBX, the module is equipped with a spill
relay which ensures the direct connection of the analogue external line to the
internal.
J1
- connector for connecting to motherboard (or extender module (the
connector is secured against incorrect connection by the blanking of
PIN 5,6,7,8).
J2 - connector RJ-45 (PIN 4-5) for connecting analogue external line.
J3 - connector RJ-45 (PIN 4-5) for connecting analogue internal line.
J4 - company servicing reanimation connector (SW for ALTERA).
J5 - connector for setting impedance (1-2= ETSI, 2-3= 600
Ω).
D1
- signalling LED ( picking up, ringing
– external line).
D2 - signalling LED (picking up, ringing – internal line).
T1
-CO transformer
Note:

Equipment attached to connector J3 (telephone) must comply with the requirements
(standard – type approval) for equipment connected to the unified telephone system.