John Gavin has been named Western region channel manager at Voice Mobility International Inc., in charge of developing and managing an expanded sales channels and distributors. Gavin has more than 20 years of sales and management experience in the messaging marketplace, having held sales and channel management positions with AT&T, Lucent Technologies and Avaya Communications. Most recently, he was the application sales executive responsible for supporting unified communications services, as well as mobility, collaboration and video applications for Avaya in Colorado, New Mexico and Phoenix.