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In a Voice over Wireless LAN (VoWLAN) deployment, an acceptable packet error rate (PER) of no more than 8% is considered compatible with maintaining good call quality. Network performance specifically for voice applications is sensitive to packet loss, which can directly lead to issues such as choppy audio, delays, and overall poor user experience.

Having up to an 8% packet error rate allows for some tolerance amidst real-world challenges like interference, distance from access points, and network congestion, while still delivering acceptable call quality. In essence, a PER of 8% may lead to some degradation in audio quality, but it is typically seen as manageable for VoWLAN applications, aligning with industry standards that suggest maintaining call quality with some level of packet loss within that range.

Values lower than this, such as 1% and 4%, offer even better call experiences but achieving 0% error is unrealistic in practical scenarios. Thus, the selection of an 8% PER threshold is appropriate for deployments where some level of degradation is tolerable for the sake of operational feasibility.