How to call forwarding after few rings or seconds in all mobiles in India

Codes for activating diverts:

• Phone switched off/out of coverage (not reachable)**62*(number to divert to)#
• Phone busy (busy/no connect)**67*(number to divert to)#
• Phone not answered (no reply)**61*(number to divert to)#
• At all times (unconditional)**21*(number to divert to)# 

Codes for deactivating diverts:

• All calls ##21#
• Not answered ##61#
• Mobile turned off ##62#
• Mobile is busy ##67# 

You can also have these codes sent to your mobile by texting the word 'divert' to 51745. 

Changing your ring time before a call diverts

You can change your ringing time on your phone from 5 seconds up to 30 seconds (20 seconds in the default). 
On your mobile:

1. Type **61*(number to divert to)**(ringing duration in seconds)# 
2. Press Call or Send.

For example, if you wanted to divert to 0871234567 after 30 seconds (the maximum time) you would key in **61*0871234567**30#. 
To divert to your Voicemail for free you would divert to your mobile number with a 5 between the third and fourth digits. For example, **61*08751234567**30#.