The use of SIP Trunking by small and medium sized businesses in the UK has risen dramatically over the last twelve months compared to the previous three years data. The rise in SIP Trunk usage in the UK has been driven by the change in business phone system technologies that have been implemented by the leading phone system manufacturers such as Panasonic, Avaya and Siemens. New communications platforms from these leading systems providers such as the Panasonic NS1000 have focused heavily on SIP technology and promote the use of both IP Telephones for extensions and SIP Trunking to replace traditional PSTN Analogue, ISDN2e and ISDN30e telephone lines.
The move to SIP trunking has not yet been driven by pricing or service except in the case of new installations where the cost of installing multiple SIP Trunking channels is far cheaper and quicker than analogue or ISDN phone lines. SIP Trunk channel rental combined with the cost of using a dedicated broadband service to deliver high quality VoIP calls will usually cost the same as renting the equivalent number of PSTN or ISDN telephone lines, and the typical call charges for using a VoIP service compared to normal phone lines are usually the same.
During 2011, there were 127 new suppliers of SIP Trunk providers in the UK compared to only 32 new SIP Trunking providers in 2010 and this should help drive down the price, provide new innovation and improve quality.
The increase in SIP Trunking has also promted a new range of VoIP Gateway products that will enable business users to utilise SIP Trunks without changing their existing analogue or ISDN phone system. A VoIP Gateway will connect to the phone system trunk ports and provide conversion of these traditional telephone technologies to VoIP so that businesses can take advantage of the VoIP revolution. Oneproduct that does just this is the Onestream VoIP Gateway that provides PSTN and ISDN2e connectivity for SIP Trunking as well as providing two built-in GSM channels to enable low cost calls to mobile phones, as well as offering mobile extension capabilities and the connection of IP Phones to provide extra capacity in the office or for homeworkers.