pbxes
If you want extensions with multiple accounts from one or different sip providers, and you don’t want to spend extra money, pbxes could be a solution. Besides pbxes, mysipswitch.com is another option.
Here is a good post talking about how to use for nokia e61. But basically, it’s the same for sip softphone on computers or sip devices.
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April 6th, 2008 at 2:11 pm
The only thing I figured out, is that you will have a headache after reading this unreal stuff. Nothing interesting!