Here are some "secret" codes for those of you who have the T310

**61*3436**30# (where 30 is the number of seconds before voicemail kicks in)

this is good because by default, your phone will ring 3 times and voicemail kicks cause you can't hear your custom ringtones!

**61*5141234567**30# (where 5141234567 is the number where call will be forwarded)

Hope that helps out people here!

See More: Sony T310 Codes