India’s First Under River Metro To Get Mobile Network Boost- Check Details

To provide uninterrupted telephone services for Metro commuters beneath Hooghly, necessary infrastructure has been installed along the 4.8 km stretch from Howrah Maidan to Esplanade.
  To provide uninterrupted telephone services for Metro commuters beneath Hooghly, necessary infrastructure has been installed along the 4.8 km stretch from Howrah Maidan to Esplanade.
   Zee News :Business