Specifications

X723-300151 1-18 Issue 2
Service: Isolated changeover relay contacts
System: Isolated changeover relay contacts
Alarm contact rating 1A @ 50VDC (Resistive) 50VA
External Status Inputs:
5 external status inputs are provided:
Characteristics:
General purpose inputs
Active: -60VDC < input voltage < 0.8VDC (Generally 0V)
Inactive: 1VDC < input voltage < 5VDC or open circuit
The external equipment must be capable of sinking 0.25mA when applying
0V, and 63mA when applying -60VDC.
External Control Relays
4 Relays are available for the control of external equipment. These
provide isolated changeover contacts:
Contact rating: 0.4A @ 125VAC
2A @ 30VDC
External Ringing Supply:
Frequency 17-50Hz
Ringing Voltage 50-150VAC RMS with station DC supply offset (-48V)
Ringer Start O/P Open collector WRT - station supply (-48V)
Max current = 50mA
NOTE: Any external ringing supply connected to the equipment must
conform to BS6301.
Local Port:
V.24, RS-232 (9 pin D-type connector)
(No handshaking)