A modern voice communication SIP protocol is widely used to make calls in the Internet. However, the final subscriber is mostly interested not in the very SIP standard but in the SIP telephony conception based on it.
One one hand, all traditional conveniences for making telephone calls, compatibility with the international subscription base and the procedure of dialing numbers are kept.
AMSTECH COMMUNICATIONS SOLUTIONS
Telecommunication technology is ever changing. Once, the telephone was only available in select locations and hardly anybody had their own personal line. Then the phone became more and more popular and soon it was in nearly every home. Traditional phone n
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