Enjoy superior call quality with HD voice calls.

No setup is required to enjoy using HD voice. It’s a technology built into your VoIP phones and devices. It’s managed centrally within your cloud phone system.

The range of frequencies and bitrate is higher, meaning your calls sound clear and crisp without any echoes or problems.

If you’ve ever been on a conference call, you’ll appreciate the vast improvement in the audio quality and clarity for participants.

To use VoIP, you must have a high-speed internet connection. HD voice may marginally increase the data usage above standard quality phone calls.

For phone calls that come in through the cellular or traditional phone system, they may not be in HD voice quality— if it’s available, the call will be upgraded.

HD voice refers to phone calls that offer higher audio quality using wideband audio codecs. HD voice is available on both VoIP and select smartphones. HD voice provides a better-quality sound as compared to landlines or calls that connect over the plain old telephone system (POTS).

HD voice is a technology from Polycom and is included with its devices including desk phones, conference phones, and wireless phones. More generically, HD audio is achieved when both parties on the phone are using a G.722 or higher wideband audio codec.

All that’s needed to experience HD voice is a compatible VoIP phone connected to a high-speed broadband connection. VoIP phones automatically adapt to the available bandwidth to provide callers the best experience.

Requirements for HD voice calls include:

• A cloud phone system that supports HD voice
• Compatible VoIP phones or business phone apps
• Sufficient network bandwidth (120kbps) for HD voice calls
• Calls to not traverse the traditional phone system (PSTN)

Note that devices connected to Wi-Fi support wideband voice, but wired connections are best.

For most users, you don’t have to do anything to experience HD voice. Contact your phone provider to ensure that HD voice calling is enabled for your account. Not all handsets and telephone networks support HD voice, and may not always result in higher quality phone calls.

Not all VoIP service providers offer HD calling, but Nextiva supports HD voice with its business phone service.

There are a few scenarios where HD voice may not be available.

• POTS/PSTN Calls: Calls connected over the Public Switched Telephone Network (PSTN) do not support HD voice due to their narrowband codecs.
• Low Bandwidth: Network connections with high latency can cause VoIP services to gracefully degrade the call quality in favor of achieving a more reliable connection.
• Cellular networks: Not all cell networks support HD voice. Top carriers have only recently expanded support for HD voice calls happening outside of their network.

We recommend installing the latest iPhone (iOS) and Android carrier updates to achieve the best possible calling experience.