SIP-addressing is logical, of the same type as URL in HTTP. And the most natural – to use the electronic mail as the SIP address. There are permissible varied parameters by the address: for example, it is possible to indicate the regular city telephone number, additional telephone, and the parameters of modem connection etc.
VaxStream Corporation is a Facility-based IP Carrier. This means that we are the service provider and there are no middlemen, so you save "BIG" and get the best in quality.