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.
Easytone Technology, Inc. (Hongkong), launched in 1997, is dedicated to the system integration of Internet/IP-Network Voice Solutions and value-added services among datacom and telecom fields.