User manual

TELEPHONE CONNECTIONS (OXYGEN 3 and 3 ST) ENG
Axel Technology srl www.axeltechnology.com TELEPHONE
CONNECTIONS (OXYGEN 3 and 3 ST)
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However, Input B configuration on Channels 4, 5 and 6 may be altered via internal jumpers, accordingly to the
following scheme:
Jumper setting LINE / PHONO on the INPUT B / Channel 4,5 & 6 Stereo input board (Oxygen 3 ST)
13 TELEPHONE CONNECTIONS (OXYGEN 3 and 3 ST)
The Telephone module features a built-in telephone hybrid.
The audio sent to the telephone caller is a mix-minus (N-1). The mix minus signal is the programme output
signal with the phone signal (caller’s voice) removed.
DO NOT CONNECT this appliance to ADSL telephone lines, even if filtered.
DO NOT CONNECT this appliance to digital Telephone lines
MAKE SURE this appliance is connected to POTS, analogue lines
In order to avoid any Hum and for EMC reasons, the system must be earthed via earthing screws on
the rear panel.
This appliance is connected to telephone networks indirectly through interface (in-house telephone
exchange / PABX). Direct connection to the public telephone net is under sole responsibility of the
user.
RJ11 socket will accept 4 conductor modular plugs, but only the 2 central pins (number 2 and 3) are typically used: