In 1979, Gordon Matthews founded a company in Texas called ECS Communications. The first VMX system was engineered by John Cayton under the direction of Gordon Matthews. In 1979, Matthews also filed a method patent for voicemail, which was granted on February 1, 1983.
In 1979, Gordon Matthews started ECS Communications in Texas. The first VMX system was developed by John Cayton under Gordon Matthews' guidance. In the same year, Matthews applied for a method patent for voicemail, which was approved on February 1, 1983.