The line phone shown above is plugged into these stations. The blue box connects to Bhoke station while the red box connects to the Karbude tunnel control directly. This ensures that the messages are passed with the minimum delay. Bhoke station has facility to patch the call to the KR's HQ at Belapur, Navi Mumbai. We saw an experimental antennae at Bhoke station that would extend the range of the walkie talkie and VHF radio inside the tunnel. 18th April 2008