voice single-pass between eSpace 79 IP Phone and remote phone
voice single-pass between eSpace 79 IP Phone and remote phone
Created: Mar 11, 2016 06:17:43Latest reply: Mar 11, 2016 20:41:50
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Issue Description
Huawei 7910 IP Phone makes a connection with remote side, but 7910 IP Phone lost the voice from other side after normal voice call about two minutes. 7910 IP Phone with a version V200R002C00B012. Alarm Information
Handling Process
Root Cause
Solution
We suggest our customer to capture the packets under normal and abnormal scenarios. From
the normal packets, we can see RTP stream use the negotiated codec (G729) during
bidirectional connections when connection is normal.
But for the issue connection, we found an abnormal point. this abnormal RTP stream (with G721 codec, not the negotiated G729) trigger our IP Phone lost voice.
we explain this exception to our customer, and suggest them to check this from their network. and customer accept this opinion at last. |
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Comment
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