Global SIP Based IP PBX Market report 2016 – 2023 is available at https://goo.gl/HVybSs. Global SIP Based IP PBX Market report says, The SIP based voice equipment and services market PBX phone systems, voice over IP gateways, UC applications and IP phones markets at $14.15 billion in 2016 are anticipated to grow strongly in the cloud computing segment to reach $59 billion by 2023. 更多