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Changing your ring time before a call diverts to another phone number?
The ring time can be set in increments of 5 seconds to a maximum of 30 seconds.
Dial the code below with XX being the number of seconds (05, 10, 15, etc)
Dial **61*Number**XX# then press call/send.
Example: To set the ring time for 20 seconds, dial **61*Number**20#