To reject net calls from anonymous callers, select Anonymous call barring > On.

Send DTMF tones

You can send dual tone multi-frequency (DTMF) tones during an active call to control your voice mailbox or other automated phone services.

Send a DTMF tone sequence

1.Make a call, and wait until the other end answers.

2.Select Menu > Options > Send DTMF.

3.Enter the DTMF tone sequence, or select a predefined sequence.

Attach a DTMF tone sequence to a contact card

1.Select Menu > Contacts. Open a contact, and select Options > Edit > Options > Add detail > DTMF.

2.Enter the tone sequence. To insert a pause of about 2 seconds before or between DTMF tones, enter p. To set the device to send the DTMF tones only after you select Send DTMF during a call, enter w.

3.Select Done.

Voice mail

Select Menu > Tools > Call mailbox.

When you open the Voice mail application for the first time, you are asked to enter the number of your voice mailbox.

To call your voice mail, select Options > Call voice mailbox.

If you have configured net call settings to your device and have an internet call mailbox, select Internet call mailbox > Options > Call voice mailbox to call it. To call your voice mail in the standby mode, press and hold 1; or press 1 and then the call key. If you have defined an internet call mailbox, select whether you want to call your voice mail or internet call mailbox. To change the voice mailbox number, select the mailbox and Options > Change number.

To change the internet call mailbox address, select the mailbox and Options > Change address.

Voice aid

Select Menu > Tools > Voice aid.

The Voice aid application reads text on the display, allowing you to use the basic functions of your device without looking at the display.

To hear the entries in your contacts list, select Contacts. Do not use this option if you have more than 500 contacts.

To hear information on your missed and received calls, dialled numbers, and frequent calls, select Recent calls.

To listen to your voice messages, select Voice mailbox.

To dial a telephone number, select Dialler.

To hear the current time, select Clock > Time. To hear the current date, select Clock > Date.

Business communications

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Nokia E51 manual Voice aid, Send Dtmf tones, Voice mail