"Catering to unique user needs was the biggest challenge," said Law. Anticipating initial quality issues, the university ran the VoIP system without any QoS measures. "[But] to our surprise the VoIP applications worked fine without QoS applied," Law said.

He also pointed out that some users still have their old phone side-by-side with the new IP phone as a fallback option, but most users have switched to the IP phones. One popular feature is the unified messaging application which combines voicemail, email and fax messages into a single mailbox that's accessible by phone, any desktop PC, or mobile email enabled devices. Off-campus users can also use a broadband connection to dial secure voice calls via a VPN and still be identified by the receiving caller residing on campus. "The new platform has provided much-improved voice services and unified messaging for all our users," Law said.