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 established a company in Texas named ECS Communications. The initial 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.