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These modules are described as follows:. The central switching frame provides switching and cascading functions.

Huawei UMG 8900 (Universal Media Gateway)

The service frame provides the service processing function. The control frame only processes call control messages rather than carry services.

In huawi, clock distribution cables are connected from the CLKs in the main control frame to the service frames and central switching frame to provide clock signals for the service frames and central switching frame. The main huaaei frame is always numbered 1. The main control frame can also serve as the central switching frame at the same time.


No independent cascading boards are required. In this case, you need to configure independent cascading boards, that is, NLUs.

The hardware fundamentals of the UMGCore Network Info Community-Huawei Connect

Clock subboards can be installed on the TNCs in the main control frame to provide stratum-3 clock signals, or independent CLKs can be configured to provide stratum-2A or stratum-3 clock signals.

Other frames extract clock signals through the TDM cascading cables between frames.

No independent clock distribution cables are required. The main control frame is always numbered 1 and the central switching frame is always numbered 0. In this mode, the SSM main control frame can use ummg8900 clock subboard on the TNC to provide stratum-3 clock signals or use the CLK to provide stratum-2 or stratum-3 clock signals.

The SSM huaweu switching frame and the SSM service frame use clock distribution cables to extract clock signals.

Group Post User Document. These modules are described as follows: This document is very well done. What do mean ssm frame?


Huawei UMG Archives – HUAWEI Mobile Core Network, OSN-Optical, Wireless Reseller

Please share the installation procedure also I like the post. Return New post Share. Fixed Network Info Community Members: Wireless Network Info Community Members: Core Network Info Community Members: