Question about Avaya Definity 7406D+ Corded Phone

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The display is too dark

The Avaya 7406 Plus display is too dark to see. The user guide does not tell how to brighten or darken the display, or if it is even possible.

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Re: The display is too dark

Which 7406 do you have?
There is a 7406D, 7406b plus and a 7406 BIS.

Posted on Dec 23, 2007

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Change my answering machine greeting on avaya 5400

Do you have voicemail pro or embedded voicemail? Do you have the right document?

Aug 22, 2012 | Avaya 5400 Series 5410 Phone

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Avaya 5402 change name on display

You would have to contact admin in charge of the phone system who has access to setup extensions.To my knowledge their is no way to change the extension name otherwise as a "normal" user.
The manual can be found here.. be sure to select your correct language, download user guide... not quick reference.

Nov 16, 2011 | Phones

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Is there an downloadable users manual? we just installed this phone and do not know how to set date/time.

Here's a link to avaya's site for a Partner ACS users guide. Not knowing which type of partner system you have, this one should get you into the ball park. Theres also programming and installation guides for the different systems there.

Also, here's how to change the time.
Changing the time on a Partner system is done on either ext 10 or 11. At one of those ext's press the feature key and "00"
next press the left hand intercom twice
the display should say system programming
enter in "#103"
the display should say system time and the current programmed time
enter the new time in 24 hour format
press feature "00" to logout

Nov 04, 2010 | Avaya 18D Phone

1 Answer

Need user or product manual

Wow, an oldie for sure. An SP-34 is a non-speakerphone (but monitor speaker) 34 button non-display terminal for a Merlin system. It's not exactly that easy, because the system it's connected to might not be what I would expect, but try this for size.

It gives you the basics and the codes should all be correct. If they don't work, you need to find out what model your cabinet is in the back room and post back, but the timing is right for a Plus.


Mar 10, 2009 | AT&T Lucent Merlin SP 34 Phone

1 Answer

Caller ID

the 7406 will not store any call information. Anything stored would be in the system memory, The newer sets ( 2400) have that capabilty. user guides are here

Aug 28, 2008 | Avaya Definity 7406D+ Corded Phone

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Ring tones

Avaya has all manuals available on their web site. If it's possible, it will be covered in the user guide for your phone 4406D+ so just do a search for "4406D+ user guide" at

Aug 24, 2007 | Avaya Merlin Magix 4406D+ Corded Phone

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