Installation 23
PIN DESCRIPTION
5Record Start 1
6Ring Mute In 1
7N/C
8+5VDC (50mA max)
9Record Stop 1
10User Out (Dump) 2
11Ringing Out 2
12Priority Ringing Out 2
13Ring Mute In 2
14(reserved)
15N/C
81
p a r a l l e l C o n T r o l
Note for the Curious
The DB- designation for
Input Characteristics
♦♦ The NX12’s inputs are designed to be universal. They accept either a voltage source up to 24VDC, or a closure to ground, which may be provided by switches, relays, or logic outputs. In the latter case either
♦♦ A built in 1k Ohm pull up resistor is provided. Parallel logic input circuit:
+5V
3 0 v m a x
Output Characteristics
♦♦ Open collector to ground.
♦♦ These will require a