AVT MAGIC TH2, Hardware Manual

Page: 110 / 130

PAGE 110
I n t e r f a c e s
A3.1.3 Handset/Telephone interface
To this interface you can connect a telephone handset/headset for the
PreTalk.
In the analogue POTS operating mode it is also possible to connect a standard
analogue telephone, through which the connection can be established and the
Pre Talk be carried out.
ATTENTION Pin assignment not standardised
Please notice that the Pin assignment of the telephone receivers is not stand-
ardised. Additionally, it is important to consider the correct polarity of the
Phantom Power.
If you connect an analogue telephone, please use Pin 3 + 4 only.
Please use 6-pole RJ12 Western connectors only since if a 4-pole Western con-
nector is used several contacts can be bent.
An analogue telephone, telephone handset and headset are optionally avail-
able.
TAB. 7 PIN ASSIGNMENT: ANALOGUE TELEPHONE /HANDSET INTERFACE
(HANDSET/PHONE)
Socket: Western (6-pole) RJ12
Pin Signal Electrical characteristics
1 HANDSET OUT a Microphone:
Impedance: ~ 2 kOhm
Sensitivity: ~ -60 dB @ 1-kHz
Telephone receiver:
Impedance: ~150 Ohm
Sensitivity: ~ 97dB @ 1-kHz
2 HANDSET OUT b
3 TELEPHONE a
4 TELEPHONE b
5 HANDSET IN a/+5V phantom power
6 HANDSET IN b
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