Hardware Description and Reference for Avaya ... - Avaya Support

Circuit packs, channel service units, and power supplies
The TN8412AP SIPI and the 655A power supply provide the following information to the G650:
● Environment maintenance
- Inlet temperature of the G650
- Exhaust temperature of G650
- Hot Spot temperature status
- Voltage, +5, -5, or -48
- Fan speed
- Fan alarm
- Ring status
- Ring control
- Ringer Setting
- Ring Detection
- Input Power, AC or DC
● External device alarm detection
The external device alarm detection uses two external leads. External devices such as an
uninterruptible power supply (UPS) or voice messaging system can use these leads to
generate alarms. The external device uses the Avaya Communication Manager alarm
reporting capability. Ground potential on either of these leads results in an alarm being
generated. You can administer the alarm level, product ID, alternate name, and alarm
description for each lead. The alarm levels are major, minor, and warning.
● Emergency transfer control
Emergency transfer control provides -48 VDC to operate an external emergency transfer
panel. The Communication Manager controls the state of the emergency transfer. When the
emergency transfer is set to other than auto, an alarm is generated.
● Customer-provided alarm device (CPAD) control
CPAD provides a contact closure across a pair of external leads. These leads can control a
customer-provided alarm device or an alarm indicator. The level of alarm can be
administered system wide to cause a contact closure. The alarm levels are major, minor,
warning, or none. When the alarm level matches the alarm level that was administered, the
TN8412AP SIPI closes this contact for all G650s. This closure occurs by a carrier address
set to A. When the TN8412AP SIPI is in emergency transfer, this contact is closed to
activate the CPAD.
278 Hardware Description and Reference for Avaya Communication Manager