Graham owns and manages Vocale Ltd. which is the parent company of The SIP School and WebRTC School.
The SIP School - http://www.thesipschool.com - is the global leader in SIP training and the issuing authority for the SSCA® SIP certification.
WebRTC School - http://www.webrtcschool.com is the issuing authority for the Certified Integrator and Developer programs, CWI™ and CWD™
Specialties: SIP, VoIP and WebRTC
Graham owns and manages Vocale Ltd. which is the parent company of The SIP School and WebRTC School.
The SIP School - http://www.thesipschool.com - is the global leader in SIP training and the issuing authority for the SSCA® SIP certification.
WebRTC School - http://www.webrtcschool.com is the issuing authority for the Certified Integrator and Developer programs, CWI™ and CWD™
Specialties: SIP, VoIP and WebRTC
