AT&T Office@Hand

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Mobile app – HD Voice | AT&T Office@Hand
Article #8030

How is HD Voice enabled on the mobile app?

High-Definition Voice or HD Voice allows you to establish calls between supported AT&T Office at Hand Desk Phones, desktop app and mobile app with high-quality voice audio. This feature is enabled and available to AT&T Office@Hand subscribers.

AT&T Office@Hand now uses the OPUS Codec, which is designed to deliver better user experience with more clarity in HD Voice, especially in limited bandwidth and network environment.

Minimum Requirements for HD Voice with OPUS Codec Support:

iOS: iPhone 4s and above, iPad 2 and higher
Android: Dual-core 1.5 Ghz and higher, Quad-core any Ghz

NOTE: If your device does not meet the minimum requirements for HD Voice with OPUS Codec support, HD Voice will be using the G.711 Codec uncompressed audio, which was designed to carry audio at 64 kbit per second fixed rate.

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