Low Bandwidth VOIP

Although voice quality may suffer, VOIP can be used over a dial-up Internet or other low bandwidth connection.

Some users have reported being able to use the Vonage service over dial-up, although Vonage doesn’t officially support this.

Hints for Low Bandwith VOIP

• OrbisTelecom offers G.711 and other low codecs with thier software.
• Choose your Codecs to minimize bandwidth — experiment those available in your system

Some companies seem cater to the low bandwidth market – for example:

• REVE Systems — iTel Byte Saver helps VoIP service providers offer their services in geographical areas where VoIP calls are blocked by firewalls.
• PCPhoneline.com — H.323 and SIP products support G.723.1/G.711 codecs and work with dialup connections as low as 19.2 kbps. Prices under $50
• IPmental — says requires minimum 10Kbps
• CuPhone — says requires minimum dialup
• Azatel — SIP ATA for dial-up Internet connections

Services offically supporting low bandwidth VOIP

• Voicepulse
• NetzeroVoice — works over dialup and connects through most firewalls
• iTel Byte Saver — reduces bandwidth consumption up to 70% at the originating end.