What's a private telephone exchange?

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    kingsly — Dec 27, 2008 2:16:42 PM — #

    Was a way to increase teledensity when BSNL didn’t have enough lines at their end.

    These guys got say 20 lines from BSNL and gave out 100 connections people. If all 20 lines were in use simultaneously the 21st person couldn’t make or recieve calls.

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