Voicemail put in wrong code ....need to input correct VM activation code

I would suggest to contact your carrier, sometimes VM needs to be reset so you can have access. If you are activating it, make sure you've been provided with the correct number to dial.

If others have voicemail on their phones then you know your system has a VM circuit card. To activate your voicemail you have to go to the individual who has admin rights to the voicemail. When they log in to their voicemail, they have manager options to reset passwords, activate or delete mailboxes, re-record the main greeting for your business, ect. Hopefully they keep a notebook with this info 'cause no one ever remembers all the steps. Also, make sure your ext is forward-no-answer to voicemail or it'll still just ring and ring. Usual code for FwdNA is 43, and 44 to cancel. Usual ext for voicemail is 200 or 300.

Almost positive that if you no longer want your vm active you will need to contact your provider and ask them to remove

What happens when you dial 500? If that happens to be your VM access code, then try PROGRAM button and dial the following 90+500 STORE for 2-way record 91+500 (#ext optional) STORE for 2-way transfer to a mailbox, and 94+500 STORE for VM Transfer.

At the minimum you need VMT. I give the customer all 3 buttons.

Carl

Reset voicemail password from AT&T's automated system

Call 611 or 800-331-0500.
Enter the wireless number starting with area code.
Press 3 to "get help with voicemail."
Press 3 to reset your VM password.
Enter the Billing Zip code for the account.
After a few seconds, iPhone will display "Password Incorrect - Enter Voicemail Password."
Enter the last seven digits of the wireless phone number and tap OK.


Reset voicemail password from AT&T's website
NOTE: You must be registered and logged into myWireless Account to view this information.

From the myWireless Account home page, select Phone/Device then choose the Reset Voice Mail PIN link from the left column.
IMPORTANT: If there is more than one line on the account, make sure the correct wireless number is displayed in the Wireless Number list before selecting Reset Voice Mail PIN.
To reset the password for any of the lines on the account, choose a wireless number from the dropdown menu
Click Submit.
After a few seconds, iPhone will display "Password Incorrect - Enter Voicemail Password."
Enter the last seven digits of the wireless phone number and tap OK.

Try pressing and holding the MUTE (CLEAR) button until the handset beeps. Then clear all incoming calls.

Contact your mobile service provider's helpdesk for further assistance on activating your VM

put an "H" after the extension in the voicemail, i.e. 200H, you have to put in your #656 #657 codes into the phones to integrate the voicemail. #656 91, ext of voicemail pilot, hold #657 92, ext of voicemail pilot, speed dial button (program one on the phone if it doesnt already have it), enter the number of seconds before the phone should forward to voicemail, i generally do 16, hold. that should fix that!

Under 'Settings>Initial Setup>DTMF', if it is turned Off, change it to short or long and it might help.

You are describing two different things. The "speaker 43" is the default code for Busy/No Anser Set. The correct syntax should be Speaker - 43 - 399 - Speaker. That should set CFWD B/NA to VM. Next, if you have a button programmed to call VM, it is probably a speed-dial or one-touch button. It would have to be programmed to dial 399. If that is not working, try calling VM (399) and make sure you can get into the box that way. If that works, but the button does not, press the Feature Key and the button for VM. It should display what is programmed for that button. If it needs to be changed to call VM, the syntax is: Feature - Redial - the button to program - "1" - "399" - Feature.