Specifications

Chapter 1 Introduction Installation and Operation Manual
1-26 Functional Description MPW-1 MP-4100 Ver. 2.0
MPW-1 Timing Subsystem
The MPW-1 timing subsystem performs the following main functions:
• Generates the clock and timing signals required by the transmit paths of the
module. These signals are locked to the Megaplex-4100 nodal timing.
• Can generate reference clock signals for the nodal Megaplex-4100 timing
subsystem, derived from the recovered clock signals of user-selected
pseudowires (see the
Adaptive Timing section), in accordance with the
commands received from the CL module.
MPW-1 Local Management Subsystem
The local management subsystem performs two main functions:
• Controls the operation of the various circuits located on the MPW-1 module
in accordance with the commands received from the CL module through the
Megaplex-4100 management channel.
• Stores the application software of the MPW-1 module. The software can be
updated through the CL module.
• Controls the routing of management traffic through the MPW-1. MPW-1
supports the transfer of management traffic, inband, for both TDM and
Ethernet applications:
 Inband management through MPW-1 Ethernet ports and associated
router interfaces, which are included in the management flow configured
by the user on the Megaplex-4100.
 One dedicated management timeslot can be assigned on each internal
DS1 port operating in a framed mode. This enables extending the
management connections, through a pseudowire that carries the
management timeslot, to other RAD equipment using inband
management over dedicate timeslots. Thus, remote RAD equipment with
E1 and T1 interfaces connected through pseudowires to the local
Megaplex-4100 can also be managed inband, using a dedicated timeslot,
by the same network management system that manages the local
Megaplex-4100, for example, RADview.
MPW-1 Diagnostic Functions
The MPW-1 module panel includes indicators that display the status of Ethernet
interfaces (see details in
Section 1.2 ).
The MPW-1 module includes the following diagnostic functions:
• Self-test upon power-up
• Local and remote loopbacks on selected timeslots of the internal DS1 port
level that can be controlled by the operator using Megaplex-4100 system
management
• Ping test, which enable checking the IP connectivity to the pseudowire
destination IP address from the MPW-1 packet ports.