Avaya B5800 User Manual Page 232

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State Switch 1 Switch 2
Open *40 *43
Pulse *41 *44
EXT O/P connections
EXT O/P ports use a standard 3.5mm stereo jack plug for connection. The B5800 Branch
Gateway is able to open (high resistance), close (low resistance) or pulse (close for 5 seconds
and then open) two switches within the port. Either switch can be operated separately. These
switches are intended for activation of external relays in systems such as door opening
systems.
Caution:
In installations where this port is connected to a device external to the building, connection
must be via a towerMAX SCL/8 Surge Protector and a protective ground connection must
be provided on the B5800 Branch Gateway control unit.
EXT O/P Pin Description
1 Switch 1
2 Switch 2
3 0 Volts (Ground/Chassis)
• Switching Capacity: 0.7A
• Maximum Voltage: 55V d.c
• On state resistance: 0.7 ohms
• Short circuit current: 1A
• Reverse circuit current capacity: 1.4A
• Ensure that pins 1 and 2 are always at a positive voltage with respect to pin 3
3.5mm stereo audio jack plugs are frequently sold as pre-wired sealed modules. It may be
necessary to use a multi-meter to determine the wiring connections from an available plug.
Typically 3 (common to both relays) is the cable screen.
Additional installation and system procedures
232 Implementing the Avaya B5800 Branch Gateway November 2011
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