The model enables departments to identify through audits whether their infrastructure is able to run the applications. It also gives IT staff knowledge of how to manage VoIP and video before they go live.
Speaking at the IP07 networking event this month, Terry Delmar, senior network analyst at GlaxoSmithKline, outlined the appeal of voice and video and the challenges it presents for network managers.
"Voice and video have been around for a long time and there is a clear understanding that by doing things over infrastructure you have already bought and paid for is going to save you money.
"But the issue is whether your network can cope with extra demands. It is something new, and people are quite rightly worried about change because they have to maintain their existing infrastructure and make sure their business keeps generating profit."
GlaxoSmithKline conducted a series of pilots using test networks and then gradually refined video and voice services to the point where they were suitable for general use on the network. This allowed the company to draft the service model for use across the company.
Going through a staged migration plan, from having no knowledge of how applications would react on a test network to the point where the company was confident about where it could deploy applications on demand and reduce uncertainty, has been the main benefit, said Delmar.
He said converged services were "just another application", but IT managers should develop service models to optimise the delivery of applications across the network.