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2. SIP trunking - Wikipedia

   en.wikipedia.org/wiki/SIP_trunking

   SIP trunking is a voice over Internet Protocol (VoIP) technology and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX) and unified communications facilities. [1]

3. Broadvox Communications - Wikipedia

   en.wikipedia.org/wiki/Broadvox_Communications

   Broadvox was founded in 2001 as a wholesale VoIP carrier and is headquartered in Cleveland, Ohio with additional offices in Atlanta, Georgia and Dallas, Texas. [2] In 2003, Broadvox began offering SIP origination and termination, which increased the companies quality of the voice transmission and expanded service offerings.

4. Phone Power - Wikipedia

   en.wikipedia.org/wiki/Phone_Power

   For home use, customers use a “Phone Power” “VoIP router” (or their own supplied hardware) that connects to their main router or broadband modem. An upload speed of 128 kbps and a download speed of 768 kbit/s is the minimum requirement for reliable quality of service without sub-standard call quality.

5. Internet telephony service provider - Wikipedia

   en.wikipedia.org/wiki/Internet_telephony_service...

   ITSPs use a variety of signaling and multimedia protocols, including the Session Initiation Protocol (SIP), the Media Gateway Control Protocol (MGCP), Megaco, and the H.323 protocol. H.323 is one of the earliest VoIP protocols, but its use is declining and it is rarely used for consumer products. [1]

6. Ribbon Communications - Wikipedia

   en.wikipedia.org/wiki/Ribbon_Communications

   The acquisition complemented their existing SBC line with the NET UX series for SIP Trunking and SIP-based UC. [ 38 ] On December 13, 2013, Sonus agreed to acquire Performance Technologies Inc entered into a definitive merger agreement, under which Sonus will acquire PT for $3.75 per share in cash, or approximately $30 million.[6]

7. SunComm Technology - Wikipedia

   en.wikipedia.org/wiki/SunComm_Technology

   Wifi IP Phone gateway 2, 4, 6, 8, 16, 24 ports SIP Proxy Server for 200 users with 2, 4, 8 FXS, FXO embedded SIP IP PBX with 72 SIP Line and 24 SIP Trunk Web Call Server: with 10 concurrent call, 30 concurrent call GSM VoIP Device; GSM Gateway (FWT) GSM VoIP gateway: 1 channel, 2 channels GSM E1 Channel Bank (30 channels)