Pattonelectronics designs, manufactures and sells data communications products through both their own catalogs and a worldwide network of authorized distributors and OEMs.

https://www.patton.com/

RingCentral delivers cloud business communications solutions that frees people to work the way they want in today's mobile, distributed and always-on work world. Delivered on a state-of-the-art cloud infrastructure, RingCentral's cloud communications solutions help more than 300,000 customers thrive in a new world of work.

https://www.ringcentral.com/

STAR-NET is a leading supplier of network product, VOIP solution, thin client terminal, communication CPE, video application product and security product. Founded in 1996 and enjoying an annual sales revenue of over 0.5 billion USD, it has more than 7,500 employees, around 3,500 R&D engineers and over 70,000 square meters manufacturing base. The stock value of the company (stock symbol: 002396) is over 1.6 billion. STAR-NET currently focuses on the new areas of digital home, wisdom park and smart society.

http://www.star-net.cn/

The VodiaPBX software uses the SIP standard and works well with most of the available VoIP phones in the market. Automatic provisioning is available for the mainstream VoIP phones. A built-in session border controller makes sure that users can use the PBX from inside and outside the corporate network. The PBX supports a mix of multiple IPv4 and IPv6 addresses. Vodia has picked up industry trends like WebRTC and integrated them into the product.

https://vodia.com/

Xorcom harnesses the power of Asterisk® Open Source IP-PBX to design and produce leading-edge hardware telephony solutions for commercial installations. Today, Xorcom offers the widest and most flexible range of solutions and hardware platforms in the Asterisk market.

https://xorcom.com/

ZYCOOCo., LTD was founded in 2006. Targeting S&M business communication market, the company is engaged in R&D project, manufacturing of VoIP device and providing VoIP communication and all related solutions. Their product line includes embedded IP-PBX and Asterisk PCI cards. ZYCOO's products and solutions are widely applied in more than 85 countries and regions. Meanwhile, the company has developed and produced more than 10 customized embedded boards based on ARM and DSP chips for USA and European customers.

https://www.zycoo.com