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Hardware and Service Requirements |
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SPANtalk offers huge savings to your monthly phone bill, including: - Free on-net calls
- No setup fee
- No monthly subscription fee
- 10c untimed calls Australia-wide
- 29.9c/min to Australian mobiles
- 2.9c/min to over 20 countries
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WHAT ARE THE ISP AND HARDWARE REQUIREMENTS?
ISP & Internet connection
- We recommend ADSL or Cable ISP connections with 128Kbps or greater upstream bandwidth. See Codecs for more info. If your modem/router provides QoS, you can use a minimum 64Kbps upstream bandwidth (e.g. a basic 256/64 ADSL) - though we recommend using QoS and/or minimising other use of internet
- VoIP conversations are counted as data on your ISP account, and count towards data limits
- Note that ISP bandwidth throttling (after monthly allowance reached) will affect your VoIP service. See Codecs for info on how much data is used for a VoIP call. ISP blocking ports may affect the VoIP service
NAT / router / firewall device requirements / Compatibility issues
- Your NAT router / firewall needs to allow Voice calls to pass through, and redirect them to your VoIP device. This is achieved by Opening or Forwarding ports (sometimes referred to as Virtual server). Port TCP 5060 is used to initiate a VoIP call, and a range of UDP ports is used to carry the voice conversation (UDP port numbers depend on your VoIP device).
- NAT (Network Address Translation) is used to share a single internet connection among multiple computers on your LAN. There are several NAT types, with different characteristics and capabilities. The most common being symmetric NAT, which does not support STUN.
- Quality of Service (QoS) support is desirable, because this can give your VoIP packets priority over other data packets.
- STUN server support is required if you will be using more than one VoIP device on your LAN. If your NAT supports STUN, then you don't need to Open/forward ports.
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