When was telecommunication service started in Madhya Pradesh?

Commencement of Telecommunication Services in Madhya Pradesh:

• Historical Origin: Initial telegraph lines were operational during the British era (Gwalior-Agra / Indore lines in the late 19th century); formal post-independence direct telephone exchange networks expanded rapidly in 1974 (first Subscriber Trunk Dialling - STD link between Bhopal and Indore).