The use of internet phone calls among small and medium-sized enterprises (SMEs) will increase by almost 25 per cent by this time next year. Research commissioned by BT Business has shown that Voice over Internet Protocol (VoIP) will be adopted by 48 per cent of SMEs - rising from the current figure of 25 per cent - by March 2008. The convenience and the cost effectiveness of the service were cited by small businesses as reason to abandon traditional phone systems, with 57 per cent of firms saying they will switch to VoIP in the next 12 months.It was revealed that medium sized business were less keen on internet phone calls, with just 20 per cent planning to make use of VoIP.Bill Murphey from BT Business said: "There has been a huge increase in the use of VoIP by the UK's smaller businesses and that looks set to continue. However, there is a large proportion of the community, particularly medium sized businesses, who could still benefit from understanding more about VoIP and using it to the best advantage of their business. "For example, making VoIP calls over your broadband connection gives you a cost-effective additional line, as well as offering you capped-price calls to mobile and international destinations. © Adfero Ltd