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

Appendix A: Specifications for DEFINITY media gateways
MCC1 power system
Cabinet Circuit breaker size (A)
DC-powered cabinets (-48 VDC)
MCC1 75
SCC1 25
Auxiliary 20
The MCC1 power system consists of an AC power distribution unit or a DC power distribution
unit in the bottom of each cabinet. Cables distribute output voltages to power unit circuit packs
in the carriers. These power systems also consist of power-converter circuit packs in the
carriers. These circuit packs supply DC power to the circuit pack slots. The following tables list
the input voltages and the output voltages of power unit circuit packs in the carriers of MCC1s.
Table 32: Power units in the MCC1: inputs
Model Inputs
120 VAC 144 VDC -48 VDC
AC 631DA1 Yes Yes No
AC 631DB1 Yes Yes No
DC 644A No No Yes
DC 645B No No Yes
DC 649A No No Yes
Table 33: Power units in the MCC1: outputs
Model Outputs
+5 VDC
60 A
–5 VDC
6 A
AC 631DA1 Yes No No
AC 631DB1 No Yes Yes
DC 644A Yes No No
DC 645B No Yes Yes
404 Hardware Description and Reference for Avaya Communication Manager
–48 VDC
8 A
DC 649A Yes Yes 10 A