How to divert call on bsnl mobile?

To divert calls on a BSNL mobile, you can use the following USSD codes. For unconditional call forwarding, dial *21 followed by the number you want to divert calls to and then press the call button. For forwarding when the line is busy, use *67; for when you do not answer, use *61. To deactivate call forwarding, dial ##21#, ##67#, or ##61# respectively.