The prison complex was formerly an old hospital and today comprises a range of building complexes. Housing more than 275 prisoners, the prison was converted in 2004-05 with a specification for analogue telephones in each cell. Later, in 2006, an additional building was rebuilt and Zenitel and RM TeleCom were then approached to primarily supply a door to gate IP communication system.

Phase one consists of four AlphaCom E7 exchanges which are interconnect in an AlphaNet IP network via Cisco switches in each building. The same IP network is also used for the prison alarms and cell telephony. Approximately 30 lines have been installed into each building with up to 28 stations in each. One of the buildings contains the SIP node to the Dect telephone system using four SIP trunk lines, shortly to be expanded to eight when two further buildings are added to the system.

In terms of functionality, intercom substations at the gates and doors to the outside of the buildings call the central guard. Using AlphaNet, the call is presented on the PC running system management software. If there is a camera at the particular gate or door calling, a picture will automatically appear.

Within the buildings, calls from the door stations or stations in common areas, go to IP Dect telephones via the SIP trunk interface in the AlphaCom E. Having answered the call, the guard will let people in or out. Should the call not be answered within a due time of time, the call is forwarded to an IP desk telephone at the central guard.

Zenitel and RM TeleCom are now continuing the project, placing new exchanges and stations as new buildings become available. In total there will be around 210 stations and in one building alone, two AlphaCom E7's using 54 lines. A nearby prison will also be integrated.

RM TeleCom expects to complete the installation in February 2008.