PAGE 27
I n t e r f a c e s
A1.2.3
POTS Line Interfaces
MAGIC THipPro can be equipped with 2 pieces of 4 x POTS modules and the-
refore provides 8 x POTS interfaces. The POTS interfaces are available on RJ
11 sockets. The pin assignment is shown in TAB. 3.
TAB. 3
PIN ASSIGNMENT: POTS LINE INTERFACES
Socket: Western (6 pin) RJ11
Pin
Signal Electrical
characteristics
1
not used
Typical characteristics:
Bandwidth:
300 - 3.3 kHz
Signal to noise ratio:
45 dB
Average level:
-9 dBm (275 mV)
Impedance:
600 ohms
DC voltage:
48 V (±6 V typ)
DC current:
20-26 mA (typ)
Ringing voltage
90 Vrms
Ringing frequency:
20 Hz (2 sec on, 4 sec off)
2
not used
3
TEL LINE +
4
TEL LINE -
5
not used
6
not used
1
6
Содержание MAGIC THipPro
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