Grandstream designs all of their products to be fully interoperable with IPPBXs, traditional PBXs, softswitches, SIP-based platforms and open-source based telephony platforms. Grandstream conducts regular interoperability tests with leading IP and traditional platforms.  Interoperability tests are typically conducted on a case-by-case basis for select customers. Contact us to send us more information about your platform and application to learn more about verifying interoperability.


AVSystem is the Polish software house, specializing in device management and provisioning platforms. Founded in 2006, AVSystem is the leading vendor of TR-069 software on the market. Its Unified Device Management Platform™ allows for single point management of any type of CPE no matter which type of protocol is used. AVSystem solutions are being selected by both service providers and large enterprises to optimize operational expenses of management of high scale CPE networks. Visit for more information.



CounterPath Corporation is a leading provider of innovative desktop and mobile VoIP software products and solutions. The Company's product suite includes
softphones, server applications and Fixed Mobile Convergence
solutions that enable service providers, enterprises and Original Equipment Manufacturers
to cost-effectively integrate voice, video, presence and Instant Messaging
applications into their VoIP offerings and extend functionality across both fixed and mobile networks.


CTI Solutions

Chromis REC from CTI Solutions is a software for managing call recordings collected by Grandstream PBX. All recordings are stored onto the server hard drive in an encrypted format, and the client software allows logged users to search for call, play or copy them. Chromis REC storage capacity is limited only by available Hard Drive space, and the Windows based LAN client access enables remote access and administration of the system. Chromis REC also adds new functionalities to standard PBX call recording such as MP3 compression, powerful search engine, advanced user management with specific rights, recording commenting and flagging.



Digium®, Inc., the Asterisk company, is the original creator and primary developer of Asterisk, the industry's first open source telephony platform. Digium provides quality hardware and software products, including AsteriskNOWTM, the complete open source software appliance. Asterisk Business EditionTM, the professional-grade version of Asterisk. AA50, the Asterisk ApplianceTM hardware-based telephony solution. Also Switchvox, a complete turn-key IP PBX solution, to enterprises and telecommunications providers worldwide.


eZuce delivers an open source platform designed to provide virtualized communications. For companies looking for an IT and cloud solution to fulfill all their communications and collaboration needs, eZuce provides users the ability to communicate openly and globally in the most cost-effective way available. And, because eZuce is a software solution built for the cloud, IT best practices apply, making this the easiest platform to operate available today. The company also built the largest and most successful open source unified communication community known as the sipXecs solution from SIPfoundry, underlining its commitment to open standards. eZuce counts as its customers some of the largest and innovative Fortune 500 companies as well as leading system integrators and partners. For more information about eZuce please visit our website at

Friendly Technologies

Friendly Technologies provides optimized device management and customer experience solutions for fixed and mobile operators. Our Friendly solutions streamline and simplify the entire broadband service life cycle, enabling operators to gain higher customer satisfaction while reducing operational costs.



Ingate Systems AB is a Stockholm, Sweden based high-tech company that designs, develops, manufactures and markets leading data communications products for trusted Unified Communications. Ingate designed the world’s first Session Initiation Protocol (SIP)-capable firewalls and SIParators, products that enable Unified Communications over the Internet.

Mida Solutions

Mida Solutions offers unique expertise and a complete suite of advanced services and voice applications with the mission to provide value added innovative technologies for communication. Well-established partnerships with major players allows Mida Solutions to deliver reliable and innovative solutions based on market leader technologies. Mida Solutions is also part of international developer programs, including BroadSoft Xtended Developer Program and many others.


Located in one of the technological centers of Southern Brazil, Opens Technology is a consulting, development and deployment of innovative technologies in the area of communication. Since 2002, active in the areas of telephony and infrastructure and computers network, Opens dedicated to transforming complex and limited computing environments into safe, modern and free structures. Its service territory is in constant growth. Opens currently has customers in all regions of Brazil and is expanding into Latin America and other world areas.



Sangoma Technologies Corporation is the premium provider of PC-based hardware and software for proprietary and open source based data and telephony transport solutions. The company develops and manufactures voice and data communication products, including the award-winning Advanced Flexible Telecommunications Product Line-comprised of the most scalable and reliable telephony and data cards in the industry.

SIP Print

SIP Print is a Southern California based software Development Company that builds communications solutions for business and institutions of all sizes. Their products are delivered as turn-key appliances to ensure product integrity, ease-of-installation and maximum performance.  SIP Print focuses on Voice-over-IP solutions and the Internet protocols (like SIP) that make multi-vendor environments work so well.  Their product suite includes Call recording, Call accounting and Network Monitoring to provide complete management for customers.  SIP Print's goal is to be known worldwide as a vendor of highly valuable yet easy to afford products.



tekVizion Labs is the first independent test lab of its kind to offer third party interoperability certification and verification of VoIP and IMS products and applications for leading platforms including Cisco, Nortel, Avaya, etc.


Vitelity is a privately owned, international voice over IP (VoIP) technology provider. Vitelity offers wholesale voice, fax, SMS, and hosting services. Vitelity ensures network reliability by operating its own 50Gbit private dark fiber network and through interconnections in major cities throughout the United States, including Denver, New York City, Los Angeles and Miami. Vitelity maintains a five-star rating from, maintains an "A" rating with the Better Business Bureau and won IT Expo's most innovative new product award in 2009 and 2010.


VoipSwitch Inc. a subsidiary of Voiceserve Inc. is an applications development company that is focused on developing high quality, scalable, and cost efficient VoIP softswitch platform solutions for global telecommunications service providers. The company is utilizing its proprietary solutions to enable operators to deliver secure, reliable VoIP-based services which are fully interoperable with other established VoIP standards and systems.