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One-Way Voice Blocking of the SoftCo Console System

Publication Date:  2015-04-21 Views:  376 Downloads:  0
Issue Description
On two PCs connected to the SoftCo9500, the SoftCo Console Systems are installed. The SoftCo is in the V100R002C03 version. The IP addresses of the PCs are and Figure 3-3 shows the network.

Figure 3-3 SoftCo Console system network

When a customer uses the Console system, the one-way voice blocking fault occurs. That is, PC2 can hear the voice from PC1 but PC1 cannot hear the voice from PC2 after a call is established.
Handling Process
Step 1 Check the earphone.

Step 2 Check the audio card.

Step 3 Ensure that the SoftConsole or PC is not muted.

Step 4 Check the microphone sound.

Step 5 Check whether the current communication port is occupied.

Check method:
Use the Wireshark to capture the network packets of PC1 and PC2 when the fault occurs, and obtain the RTP packet port number used by PC1 (the party who cannot hear the voice) based on the SIP message. Determine whether the port receives RTP messages that are sent only by PC2. If the port also receives messages sent from another IP address, the port is occupied.
Stop the device with the unknown IP address.

Step 6 If the fault persists, contact Huawei technical support engineers.


Root Cause
The possible causes are as follows:
  • The earphone does not work.
  • The PC audio card is incorrectly configured.
  • The SoftConsole or PC is muted.
  • The sound of the microphone is too low.
  • An error occurs on the network.