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Fault of APU board leads to some conference site have no voice

Publication Date:  2012-09-18 Views:  126 Downloads:  0

Issue Description

Loopback test of terminal host in some conference sites normally, but couldn’t communicate voice with other conference site.

Alarm Information


Handling Process

Because some conference sites have no voice at the same time, judge that the APU voice handle board of MCU in trouble. Confirmed that voice of conference site connected with a same LIU board disappears at the same time, but fault disappears after replace the APU board corresponded LIU board.

Root Cause

Each four conference sites mixing with a same APU board, if some faults happened on this APU board, it will leads to voice of those four conference sites in trouble.