Overview
When experiencing one-way audio issues on internal calls from a Voice Operator Panel (VOP) system, it may be due to a codec mismatch. The VOP client might default to a codec like G.722, which is incompatible with the receiving system that requires G.711. This guide provides steps to prioritize the correct codec and ensure network configurations support it.
Information
To resolve one-way audio issues on internal calls from your VOP system, follow these steps:
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Reset VOP Settings:
- Launch the Voice Operator Panel application.
- Click the "Reset" button to revert settings to default configurations.
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Configure Codec Preferences:
- Access the VOP system's network settings.
- Prioritize the G.711 codec over G.722 for internal calls.
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Reinstall VOP Application:
- Uninstall the current VOP application.
- Download and install the latest version from the official website.
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Review Network and SIP Configuration:
- Ensure network and SIP trunk configurations allow and prioritize the G.711 codec.
- Disable SIP ALG settings on network devices to prevent interference with audio transmission.
If the issue persists, gather SIP traces or call samples with details such as calling numbers, date, time, call result, and observed trouble for further investigation.
Frequently Asked Questions
- What causes one-way audio issues in VOP systems?
- One-way audio issues often result from a codec mismatch, where the VOP client uses a codec incompatible with the receiving system, such as G.722 instead of G.711.
- How can I prioritize the G.711 codec in VOP settings?
- Access the VOP system's network settings and adjust the codec preferences to prioritize G.711 over other codecs like G.722.
- What should I do if resetting and reinstalling the VOP application doesn't resolve the issue?
- Review your network and SIP configurations to ensure they support the G.711 codec and disable SIP ALG settings on network devices. If the issue persists, provide SIP traces or call samples for further investigation.
Priyanka Bhotika
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