This is a device allowing a user to make VoIP calls using session initiation protocol (SIP). SIP is a telecommunication technology developed as a fast, easy standard for delivering IP-based data, voice, and video communications.
Unitrac Communications is a fast growing service provider telecommunications in Europe and all over the world. Thanks to VoIP interconnections with more than 60 carriers we provide you with the best terminating quality at the cheapest prices availabl
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