T_Mobile Conditional Call Forwarding[zz]

http://forums.t-mobile.com/t5/Non-T-Mobile-Phones/KS360-Forwarding-calls-on-tmobile/td-p/309872

Conditional call forwarding (called call diversion in British English) is an underutilized and very useful service that is available to all postpaid monthly billed subscribers. It's most useful if you'll be in a place with no reception but a landline phone, and can be useful to divert received cell calls to a landline phone to avoid airtime minutes.

All accounts have unconditional and conditional forwarding included in their account features. Your account has an allocation of 500 forwarding/diverting monthly minutes. Beyond 500 minutes, overages may apply.

Most mobile phones present the forwarding features in their menu systems. Accessing the forwarding features through the menu system is typically more time consuming and tedious when compared to using MMI codes directly dialed into your phone or set up as speed dial entries on the phone.

The feature codes for these and other GSM features can be found in the wiki under T-Mobile_Tips_&_Tricks An example page with the codes is: [1]. The above URL provides most details, but tersely. For some reason this URL is missing "all conditional types activate & register number," but that code is listed below.

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Unconditional forwarding

Unconditional forwarding immediately routes all incoming calls to the number specified. Unconditional forwarding takes precidence over conditional forwarding.

The following MMI codes manipulate unconditional forwarding.

**21*+<country code><phone number># [SEND] (activate unconditional forwarding)

##21# [SEND] (deactivate unconditional forwarding)

*#21# [SEND] (report status of unconditional forwarding)

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Conditional forwarding

Conditional forwarding routes all incoming calls to the number specified when the corresponding condition is met. There are three forwarding conditions.

>No answer after specified period

>Unreachable due to no signal or phone powered off

>Busy on another call

Conditional call forwarding can be made to simulate unconditional call forwarding by forwarding on unreachable and then turning off your mobile phone (which makes it unreachable).

Because conditional forwarding is integral to correct operation of your voicemail, before changing any values, you should verify what they're set to first (write it down), so rather than deactivating it, you can set it back the way it was. Most likely, the number is a T-Mobile voicemail number: +18056377243 (+1-805-MESSAGE). Since it's possible that your voicemail box only works from some numbers (not my experience, but it's possible), it's probably best that you restore it to the original number.

The following MMI codes report conditional forwarding status.

*#61# [SEND] (forward on no answer)

*#62# [SEND] (forward on unreachable)

*#67# [SEND] (forward on busy)

Most likely, these will all be the same number.

The following MMI codes manipulate conditional forwarding.

**004*+<country_code><phone_number># [SEND] (all conditional forwarding) e.g. **004*+13115552368#

##004# [SEND] (cancel all conditional forwarding)

**61*+<country_code><phone_number># [SEND[ (forward on no answer) e.g. **61*+13115552368#

**61*+<country_code><phone_number>**<seconds># (forward on no answer specifying ring time)

##61# (cancel forwarding on no answer)

**62*+<country_code><phone_number># [SEND] (forward on unreachable) e.g. **62*+13115552368#

##62# (cancel forward on unreachable)

**67*+<country_code><phone_number># [SEND] (forward on busy) e.g. **67*+13115552368#

##67# (cancel forward on busy)