Replacement System
Many of the switches are now near to or over 20 years old, giving an idea of their reliability.
System X is in the process of being replaced by BT's 21 Century Network (21CN). Many of the other main users of System X - in particular Jersey Telecom and Kingston Communications - have already replaced the bulk of their circuit switched networks with Marconi softswitches and Access Hub multiservice access nodes.
System X is currently undergoing something of a renaissance; although the Falklands & Jersey have moved onto Softswitch technology, operators such as BT, Virgin Media, Thus/Your Comms/Cable & Wireless have renewed their interest in keeping this "legacy network" switch operational for the foreseable future.
Read more about this topic: System X (telephony)
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