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Subscriber Trunk Dialling
Subscriber Trunk Dialling
Subscriber Trunk Dialling India
Subscriber Trunk Dialling 2024 Hello, Peshawar! Trivandrum’s tryst with telephone history | Lifestyle Column | English Manorama Onmanorama
Queen's first video call echoes Her Majesty's historic trunk call to Edinburgh in 1950s Edinburgh News
Snapshot: advancement in VoIP in India Lexology
Burail jail admin suggests increase in inmate wages, STD call time The Indian Express