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2. CPX-1000 Voice Services Platform Description 1000-A2-GN22-00
2-6 February 2003
Management
Processing
The Management Processor (MP) module is the administrative
CPU for the CPX shelf. It acts as a database for the shelf and as an
administrative interface for JetCraft, JetVision, and other
management interfaces. The MP supports:
Configuration, fault, and security management for the CPX
Configuration management, fault management, and remote
software upgrade of the IADs
High-performance, memory-resident database for persistent
configuration
Real-time performance and error statics
The Embedded Operations Channel (EOC) process on the MP
module handles the interface between the CPX shelf and the GR-
303 interface on the Class 5 switch. The EOC supports the
following set of management services to the switch using the T1
model and GR-303 protocol stack:
1. The EOC process receives the management requests over the
EOC connection to the switch.
2. It then interacts with the management process to complete
these requests.
3. The management process notifies the EOC process about
changes in the operating status of the CPX-managed objects.
4. The EOC process sends this information to the Class 5 switch.
Call Processing The Call Processor Engine manages the connections between the
CPX shelf and the IADs at subscriber premises.
The Call Processor Engine resides on the redundant Call Processor
(CP) modules that handle call processing, call-control signaling,
call setup, and call tear-down.
The Timeslot Management Channel (TMC) process on the CP
modules receive all call control signaling from both the Class 5
switch and the CP using the Q.921 (LAPD) data link protocol.
The IAD Signaling and Connectivity function manages
communication between the CPX and the IADs. The information
passed between the CPX and each IAD includes common channel
signaling, alarms and events, and software downloads.
PSTN Interface The PSTN interface connects the CPX to the Class 5 switch via T1
or STS-1 lines. The Port Controller inserts framing and supervision
signals into the TDM data stream. The PSTN interface then directs