Below are the PIN code requirements for protecting your Voicemail.
It cannot have Sequential digits
Sequentially ascending digit patterns are those that increase by one from each number to the next. Sequentially descending digit patterns are those that decrease by one from each number to the next. Any sequence of 3 sequential digits in a passcode will be rejected by the phone system. Examples of rejected passcodes: 123545, 365472, 123456, 426987
It cannot have repeated Digits
Any sequence of 3 repeated digits will be rejected by the phone system. Examples of rejected passcodes: 111537, 485552, 342333, 444444
It cannot have Repeating Sequences
If the passcode is only formed by repeating sequences, the passcode will be rejected by the phone system. Examples of rejected passcodes: 24 24 24, 747 747, 9123 9123
It cannot have the Extension on passcode
If the passcode contains the extension or the reverse of the extension on the passcode, the passcode will be rejected by the phone system. Example: Passcode 6074 Example of rejected passcodes: 607434, 360744, 534706, 470606
It cannot be part of the phone number
If the passcode is part of the phone number or the reverse of the passcode is part of the phone number, the passcode will be rejected by the phone system. Example: Phone Number 02054275924 Example or rejected passcodes: 205427, 275924, 295724, 2450201
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