Avaya Media Processing Server 1000 Hardware Installation And Maintenance page 22

MPS 1000 System Hardware Overview
Time Space Switch
Each NIC contains a time space switch for the redundant Pulse Code Modulation (PCM) highways.
With all four TMS in the chassis connected to a common CT bus, all lines can be bridged on a
nonblocking basis. The single PCM port for each TMS and single set of PCM highways is split to
both NICs. If a fault occurs in the primary switch, the secondary takes over. Primary and secondary
operation of the Ethernet and PCM highways are independent.
Ethernet Hub/Switch
Because the NICs are identical (that is, they can be installed in either slot), there is a hub for both
ENET A and ENET B on each. However, the primary NIC (installed in slot 7) always controls ENET
A and the secondary NIC (installed in slot 8) controls ENET B. One port of each NIC hub is
connected to a VRC rear panel data connector to provide connection to an external cabinet
switching hub so that multiple chassis can be networked.
Optical ATM Interface
Each NIC also provides a fiber optic ATM interface for connecting the PCM highways to an external
ATM switching fabric, if so configured.
Avaya Media Processing Server 1000 Hardware Installation and Maintenance
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Comments? infodev@avaya.com
October 2014