SIP Phones Featured Article

September 21, 2012

Key to Improving VoIP Call Quality

By Ed Silverstein

One way to improve the sound quality of VoIP calls is to be selective about the codec – at least according to a recent news report. The codec selection is often limited by what is offered from a user’s VoIP provider and what a user’s hardware will support.


However, Australia’s BIT recently reported that many VoIP services use the G.729 codec for their consumers, which has relatively low bandwidth to meet the needs of Internet connections for most residential uses.

But it may not lead to the best call quality, BIT explained. They instead insist switching to the G.711 codec, which improves sound quality, and would especially meet the needs of business users. However, G.711 uses more data than G.729. Faster Internet connections are needed, as well, BIT said; users should have at least 85 kbps per call using G.711.

Additionally, to improve call quality, BIT recommends monitoring latency, especially if it goes beyond 150 milliseconds. Also, voice traffic should be given priority over other Internet traffic. 

For example, when VoIP adaptors are not built into a modem, a user may need to manually configure a modem to make sure VoIP traffic is prioritized.

Beyond this, obviously selecting the right phone can lead to improved call quality. For example, the Business Insider recently gave high marks to the Panasonic (News - Alert) DECT system’s KXTGP500. Based on a review the phone was “strongly” recommended. Another user review from Amazon called the phone, “perfect for small business or home office.”

Panasonic’s advanced line of SIP phones are designed to allow smooth conversations with HD voice quality, easy operation, and low power consumption. Boasting power and efficiency couples with simplistic settings and hassle-free installation, Panasonic offers a wide selection of models to meet your specific business needs.

Interested in learning more about Panasonic’s powerful line of SIP phones? Click here.

Want to learn more about the latest in communications and technology? Then be sure to attend ITEXPO West 2012, taking place Oct. 2-5, in Austin, TX.  Stay in touch with everything happening at ITEXPO (News - Alert). Follow us on Twitter.




Edited by Allison Boccamazzo


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