Bandwidth Requirements and CODECs

To use the JTK system, there are a few requirements to be met:

1. High speed, stable Internet connection. The minimum requirement is 64 Kb/s in each direction or a total of 128kb/s. To verify connection reliability you can use packet tracing software to reveal network problems. We recommend a product called "Ping Plotter". You can download a free trial version at http://www.pingplotter.com.
2. SIP IP phone, you can use a softphone if your PC has speakers and microphone or a headset.
3. A personal computer for account management.
4. SIP IP phone must use G729 as the low bandwidth CODEC since we do not support G723.