LOCK/UNLOCK Codes For BSNL Landline Users

LOCK/UNLOCK Codes for BSNL Landline Users
How To Register Secret Code.
Suppose you want to make 5555 your secret code.Follow this procedure:
Dial 123 5555 5555 then wait for the acceptance tone then disconnect. Your code is registered.
•How To Change Secret Code.
Suppose you want to change current code 5555 to 4444 then Dial 123 5555 4444 then wait for the acceptance tone then disconnect. Your new code(4444) is registered.
•How To Bar/Open Facilities using Secret Code
1.Bar STD/ISD calls (lock) Dial 124 5555 1 then wait for the acceptance tone then disconnect. Now STD/ISD calls will be barred .
2.Open STD/ISD calls (unlock) Dial 124 5555 0 then wait for the acceptance tone then disconnect. Now STD/ISD calls can be made.
3.Bar STD/ISD/manual trunck calls (lock) Dial 124 5555 2 then wait for the acceptance tone then disconnect. Now STD/ISD/manual trunck calls will be barred . (It will also bar calls to 95 level).
4.Open STD calls only (unlock) Dial 124 5555 3 then wait for the acceptance tone then disconnect. Now STD calls can be made.
5.Bar local calls (lock) Dial 124 5555 4 then wait for the acceptance tone then disconnect.
6.Open local calls only (unlock) Dial 124 5555 1 or 2 then wait for the acceptance tone then disconnect. Now Local calls can be made.