The Army had first introduced the Mobile Cellular Communication System (MCCS) in 2007 on a trial basis in Jammu under the 16 Corps headquarters.
It is currently being spread across the Kashmir sector under 15 Corps and sources say 70 per cent of the work has been completed.
"The plan is now to move into other areas of the country as the MCCS has turned out to be very useful during Kashmir floods. While all other mobile network was done, MCCS was working," Army sources said.
MCCS is a CDMA-based system and offers more secrecy, besides better protection against hacking.
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"MCCS uses a captive army network and is limited to Army usages. It will prove very effective in tactical and operational scenarios," the sources said.
The government has given its nod to about Rs 900 crore for MCCS to be set up in three more Corps of the Army and sources indicate that the focus would be Northeast.
The approximate cost of setting up the system in each Corp is about Rs 200-250 crore, but the amount can go up depending on the geography of the area.