Case Study - Internet Telephony and VOIP

A relatively new but growing technology is the ability to use the Internet for telephone calls, mainly driven by the need to reduce costs within a company. The client, an existing customer, approached us to find out more about the possible savings plus what changes would be needed.

Our customer, a specialist contractor working in environmental controls had an ISDN 30 line providing multiple digital telephone lines incorporating a group of DDI numbers for each staff member. We looked mainly at the line rental costs and compared these to an alternative internet service called Sip Trunking. Sip uses the internet and Broadband to set up a voice link between other users, permitting calls to be made and received in the normal way.

We were instructed to proceed and arranged for the clients existing telephone numbers to be moved onto the new service. Due to the relatively higher cost of ISDN rental, a saving of around 65% on line rental charges was achieved. As an added bonus, a saving on call charges was also possible.