Signaling Adaptation Module: The signaling adaptation module adapts the signaling of the wireless access network and

PSTN to the signaling of the IP packet network. This module cooperates with the TDM processing module, packet processing module and gateway control and management module to adapt and forward signaling. This module includes the SPF. The corresponding physical board is the MSPF.

 

Cascading Module: The UMG8900 supports different application capacities through the single-frame and multi-frame cascading modes. The cascading module provides the cascading of packet, TDM and control service streams in the multi-frame cascading mode. The cascading module consists of the packet service processing sub-module and TDM service

processing sub-module and contains the TNU and OMU/MPU. The TNU and OMU/MPU correspond to the physical boards MTND and MOME/MMPE.

This document is very well done

very useful and informative.

Thanks to share this dpcument. 

Can you give more regarding single-frame and multi-frame cascading mode?

single-frame  mode: Only single frame is used, either SSM-30 or SSM-256

multi-frame cascading mode: Two frame is used as cascading, SSM-30 &  SSM-256

Can you give something about Boards info?

TNU(MTNB):

Establishing and releasing TDM timeslots in cooperation with TDM service interface boards, and providing 8 K or 1 K switching capacity for each interface board.

Connecting with the MTNB of another frame directly or through the UG02MBLU by multi-mode optical fibers, and providing 32 K timeslot cascading capacity.

Managing and maintaining the boards through the specified MBus module. Reporting the status and version of the boards to the main control board of the local frame. Communicating with the main control board of the local frame through the FE interface.

OMU(MOMU):

As the management and control center of the whole equipment, the master and slave MOMUs are inserted in front slots 7 and 8 in the main control frame.

Providing packet switching function at the control plane to communicate with all the boards with FE control interfaces and to exchange information with other frames and manage interfaces in the multi-frame cascading case.

Embedding a BAM, which provides MML and Telnet interfaces to configure and maintain boards, and saves log files and alarm information.

Very good document