Looking to expand channel sales and enterprise customer accounts, Voice Mobility International Inc. has expanded its sales team. Dave Ballins, a recognized expert in unified communications with 20 years experience, has previously held senior management positions in the messaging field with companies such as VMX, Octel, Lucent and Avaya. He was president and CEO of eCend Managed Systems as well as serving as director of marketing and revenue for the International Association of Messaging Professionals. Gary Tasker is a specialist in channel development and training systems with 15 years experience in sales. Previously, he held positions at ROLM, Octel, Lucent and Avaya. Tasker also served in channel management roles at Mutare Systems and Nuance.