the london pabx range was an early entry into the deregulated uk telecommunications market place
made by national telephone systems [nts], the range was highly popular offering pabx systems of up to 128 ports
eventually, nts was bought out by alcatel who ultimately ceased the range
sjg installed and maintained many, many london switches throughout the uk; the switch now has been ruled obsolete
any existing londons are usually to be found in hotels as they used mpd for call billing
london 32
the london 32 was the most successful of the range with a typical maximum size of 8 lines & 24 extensions
the switch had a dedicated operator console - later versions had a screen based console
their age makes them prone to sudden psu failure, especially after a power cut. mother boards and the cpu card are subject to deteriorating ability which, prior to failure, is indicated by poor ringing at telephones. even a temporary power interruption can wipe the memory of the switch so: connect a suitable printer to the v24 and take a back up of the switch programming by dialling 1951 at the console
version I 32s & 64s are at risk of fire after psu replacement: only task this type of work to an engineer who can prove he has extensive expertise on londons. never allow a mcfaddian psu to be fitted in a type I london
approach with caution
looking to change out a London Hotel system? then click here
the london 64 was the flagship of the range with a typical maximum size of 16 lines & 48 extensions
the switch had a dedicated operator console - later versions had a screen based console
their age makes them prone to sudden psu failure, especially after a power cut. mother boards and the cpu card are subject to deteriorating ability which, prior to failure, is indicated by poor ringing at telephones. even a temporary power interruption can wipe the memory of the switch so: connect a suitable printer to the v24 and take a back up of the switch programming by dialling 1951 at the console
version I 32s & 64s are at risk of fire after psu replacement: only task this type of work to an engineer who can prove he has extensive expertise on londons. never allow a mcfaddian psu to be fitted in a type I london
approach with caution
looking to change out a London Hotel system? then click here
the london 8 was a late arrival on the scene offering 8 ports for use as extension / lines
these switches are not prone to the terrible problems of the 32 & 64 versions but a database printout should be taken
the london 16 was another late arrival on the scene offering 16 ports for use as extension / lines
an operator console was available
these switches are not prone to the terrible problems of the 32 & 64 versions but a database printout should be taken
