Throughout the 1960s, 1970s and early 1980s, Kingsway Trunk Switching Centre ( as it became known ) was a trunk switching centre and repeater station with Post Office engineering staff totalling over 200 at its peak.
22.
In the Iuh architecture, the femtocell gateway sits between the femtocell and the core network and performs the necessary translations to ensure the femtocells appear as a radio network controller to existing mobile switching centres ( MSCs ).
23.
Television signals were relayed by land-line from the studios to the switching centre; a distance between the studios and the exchange greater than would have significantly increased the cost of receiving the networked programmes from the other ITV stations.
24.
The INEX switching centres are located in four secure data centres in Dublin : TeleCity Group in Kilcarbery Park, Dublin 22 & TeleCity Group in Citywest Business Campus, Dublin 24 and Interxion DUB1, and Interxion DUB2 in Park West.
25.
Others were replaced with distributed switching hardware ( a remote switching centre controlled by a digital switch in the city ) or with small digital switches such as Nortel's DMS-10 ( a self-contained exchange for up to 8000 subscribers ).
26.
In the early days of manual exchanges, outlying areas ( eventually called dependent exchanges ) were connected through progressively larger locations ( eventually called group switching centres ) into one of the main cities-Birmingham, Edinburgh, Glasgow, Liverpool, London, and Manchester.
27.
Each of the 639 charging areas was associated or coterminous with one of 230 Group Switching Centres which contained register-translators ( Also referred to as GRACE-Group Routing And Charging Equipment ) required for local subscribers to originate self dialled trunk calls.
28.
Prior to the introduction of Subscriber Trunk Dialling, most Group Switching Centres housed operators in an Auto Manual Centre ( AMC ) who were able to place any calls for subscribers in the local area that could not be directly dialled.
29.
The INEX switching centres are located in five secure data centres in Dublin : TeleCity Group in Kilcarbery Park, Dublin 22 & TeleCity Group in Citywest Business Campus, Dublin 24 and Interxion DUB1, and Interxion DUB2 in Park West, and Vodafone Clonshaugh.
30.
The telephone system employs an extensive system of modern network elements such as digital telephone exchanges, mobile switching centres, media gateways and signalling gateways at the core, interconnected by a wide variety of transmission systems using fibre-optics or Microwave radio relay networks.
