The Isle of Man has an extensive communications infrastructure consisting of telephone cables, submarine cables, and an array of television and mobile phone transmitters and towers.
The history of Manx telecommunications starts in 1859, when the Isle of Man Electric Telegraph Company was formed on the island with the intention of connecting across the island by telegraph, and allowing messages to be sent onwards to the UK. In August 1859, a 36-nautical-mile (67 km; 41 mi) long cable was commissioned from Glass, Elliot and Company of Greenwich and laid from Cranstal (north of Ramsey) to St Bees in Cumbria using the chartered cable ship Resolute. The cable was single-core, with gutta-percha insulation.
Twenty miles of overhead cable were also erected from Cranstal south to Ramsey, and on to Douglas. In England, the telegraph was connected to Whitehaven and the circuits of the Electric Telegraph Company.
The telegraph offices were located at 64 Athol Street, Douglas (also the company's head office) and at East Quay, Ramsey (now Marina House).
On 10 August 1860 the company was statutorily incorporated by an Act of Tynwald with a capital of £5,500.
The currents at Cranstal proved too strong, and in 1864 the cable was taken up and relaid further south, at Port-e-Vullen in Ramsey Bay. It was later relaid to land even further south at Port Cornaa.
Following the 1869 finalisation of UK telegraph nationalisation into a General Post Office monopoly, the Isle of Man Telegraph Company was nationalised in 1870 under the Telegraph Act 1870 (an Act of Parliament) at a cost to the British Government of £16,106 (paid in 1872 following arbitration proceedings over the value). Prior to nationalisation, the island's telegraph operations had been performing poorly and the company's share price valued it at around £100.
Subsequent to nationalisation, operations were taken over by the GPO. The internal telegraph system was extended within a year to Castletown and Peel, however by then the previous lack of modern communications in Castletown had already started the Isle of Man Government on its move to Douglas.