Question about Mitel Superset 420 Corded Phone

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Clock How do I change the clock on a Mitel Superset 420?

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  • CFLM May 20, 2008

    As far as I know our phone does not have a function key, just a superkey and the blue keys below the time. But we would like to set the time.

  • Anonymous Mar 19, 2014

    When I try to set a Superkey on this model, it is already preset and wont let me erase it and change. After I select a key I want to change , "466:" appears and I don't get any options to change or erase.



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Your clock on your telephone is displaying the "system time" which can be changed at the attendant console the receptionist uses. Go to the console and push the FUNCTION KEY, then press ATT FUNCTION, then press SET TIME, enter the current time using four digits, ie. 09:30, then press PM if applicable, then press SET. SET will only appear as an option if the time has been enteed correctly, you can use the back arrow button to make corrections. Then push EXIT.

Posted on Feb 10, 2008


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Mitel Superset 420 corded phone has static

Static on the handset of a MITEL phone is indicative of either a defective handset cord **OR** the user has one of those cord detangler devices attached to the cord. If it's a cord detangler, remove it, smash it with a hammer and throw it away. Advise the end-user to please not use these as they all become staticky after several weeks use. If the user has problems with their handset cord constantly becoming tangled, THAT PROBLEM is indicative of neck or ear fatigue from frequent LONG CALLS and the user keeps moving the handset from one ear to another (changing hands). THE FIX FOR THIS is to give the user either a corded or cordless headset (or check SMDR records for excessive personal calls)

Feb 12, 2014 | Mitel Superset 420 Corded Phone

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This is a system manager finction. Whoever maintains your PBX and voice mail system has the ability to do this. Hope this helps.

Feb 12, 2014 | Mitel Superset 420 Corded Phone

1 Answer

How to change date and time on Mitel superset 420

contact your system administrator or vendor. The date and time is a system setting, not just for your telephone.

Jan 11, 2011 | Mitel Superset 420 Corded Phone

1 Answer

How do I transfer a call directly into someone else's voice mailbox on a Mitel Superset 420?

With the call on the line press TRANS/CONF and dial the destination number, talk to the person you want to transfer the call and then press RELEASE to transfer the call. If you want to return to the caller juast press CANCEL.

May 14, 2010 | Mitel Superset 420 Corded Phone

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How to reset voicemail password on a Mitel superset 420?

contact your system admin or vendor to have the mailbox reset. The mailbox isn't inside the phone, it's a system that supports all the phones in your office/company.

Apr 21, 2010 | Mitel Superset 420 Corded Phone

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Reset voicemail password

Just enter 0000 fron the phone.

Jan 14, 2009 | Mitel Superset 420 Corded Phone

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Mitel Superset 420 and 4025 -- RED --- WHY are these RED ??? Does anyone still buy these ??? plase also email me at

Red phones were generally used as hot lines that automatically dialed a number; however, I have heard of some companies standardizing on red phones.

Feb 01, 2008 | Mitel Superset 4025 Corded Phone...

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It has to be done at the attendant console or admistration connection. You should see your receptionist or telephone guy.

Jan 24, 2008 | Mitel Superset 420 Corded Phone

1 Answer

Mitel 420 superset

Message system does not work, system wide or just at your ext.? If it doesn't work system wide you have big problems. If it is only at your ext. your call forwarding maybe turned off. press superkey then press next til you see call forward and set it up. You Need to know pilot number to Voicemail.

Sep 25, 2007 | Mitel Superset 420 Corded Phone

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