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Doug106
Aspiring Contributor

‎12-10-2023 14h18 - edited ‎12-10-2023 14h22

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Message 1 of 2

Invalid MMI Code

Hi,

I've been trying to change the time duration before voicemail takes up an incoming call by entering the following.


**61*+447953222222*11*20#

However I get an error message on my phone "Invalid MMI Code" and I've had similar errors when entering other codes.

I'm using the phone in WiFi connect mode as I don't have a mobile signal where I live, could this be a part of the problem?

Can anyone help me out with how I should set the MMI code on my mobile phone?

 

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1 REPLY 1
Keith_Beddoe
Distinguished Sage
Distinguished Sage

on ‎12-10-2023 14h28

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Message 2 of 2

Re: Invalid MMI Code

@Doug106 

Welcome to this user forum for BT Retail phone and broadband customers.

There is some help on this thread https://community.bt.com/t5/Archive-Staging/Length-of-ring-before-going-to-voicemail/m-p/2150307#M12...

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