MTNL STD ISD Locking

MTNL has unlocked STD for all of its landlines. It has a dynamic locking system to lock and unlock all calls to a line .
Dynamic locking completely eliminates misuse of your telephone by others. It prevents unauthorised calls from your telephone.
This is how you use it
First remember a numeric 4 digit secret code
*ABCD -Old Secret Code
NEWC- New Secret Code

For Registration of Code DIAL 123 ABCD ABCD
and wait for a confirmation
To Change Secret Code 123 ABCD NEWC
and wait for a confirmation

TO OPERATE THE FACILITY
All calls allowed Except STD DIAL 124 ABCD 0

Local (Landline,Cellular,WLL-M / Internet / Trunk ) 124 ABCD 1
Local (Landline) / Level-95 (upto 50 Kms.) 124 ABCD 2
Local (Enable STD) 124 ABCD 3
All outgoing Calls Barred 124 ABCD 4
Local (Landline,Cellular,WLL-M) / Internet /
Trunk / Level-95/Maharashtra Circle Mobile 124 ABCD 5

Hope you use this facility to prevent misuse of your phone

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6 Responses to MTNL STD ISD Locking

  1. state bank of mysore says:

    OUR LAND LINE NO.25032766 – STD IS LOCKED – SECRET CODE IS FORGOTTEN – PLEASE OPEN THE SAME

    AGM, STAE BANK OFMYSORE,
    RASMECCC, NO.314, KOHINOOR CIY MALL,
    KIROL ROAD, KURLA WEST MUMBAI

    RASMEC

  2. ajit says:

    thanks for the lovely info !
    bookmarked

  3. avince says:

    i want to lock my out going. How do i proceed with this

  4. Anil seth says:

    Can some tell me how to unlock after I have locked all outgoing calls

  5. Sumeet Jain says:

    What if someone forgets the code. How to get it back??

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