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Nortel Meridian Digital Telephone M3904 Summary


To place an active call on hold, press the HOLD key (telephone indicator beside your Line or DN key will flash – indicating that you have a call holding).

To return to held call, press the LINE or DN key that is flashing.

Note:  You will hear an audible reminder of held call after 60 seconds.

Handsfree Calling

To place a call using your speaker phone

  • Press the HANDSFREE key
  • Dial Number
  • Disconnect by pressing GOODBYE key

Note: To make the speakerphone conversation private, lift the handset. To go back to a speakerphone conversation, press the HANDSFREE key and hang up the handset.


To mute your end of the conversation, press the MUTE key. (The red indicator light will flash when MUTE is active.)

To return to two-way conversation, press the MUTE key again. (The red light will turn off.)

Note: The MUTE key is programmed to detect whether you are on headset, handset, or speakerphone and will choose the correct path to mute.


To transfer a call:

  • Press TRANSFER key – you will hear a stutter dial tone, indicating that your call has been placed on hold.  The indicator beside the green LINE or DN key will flash until transfer is complete.  
  • Dial number you are transferring call to (announce transfer if you wish)
  • Press CONNECT to complete the transfer. 

 To switch between original caller and transferred party, press the SWAP key.

 To rejoin caller if transferred number is busy or unanswered, press LINE or DN key where indicator is flashing.

 Note: To complete a “blind” transfer, dial the number and press CONNECT when the phone begins ringing.


To establish a conference call:

  • While on an active call, press CONFERENCE.  You will hear a stutter dial tone, indicating that your call has been placed on hold.   The indicator beside your LINE or DN key will flash until conference is complete.
  • Dial number of the party you wish to conference.
  • Press CONNECT to complete the conference - all parties can now talk.

Repeat steps above to add additional parties.


  • The conference feature includes yourself as 1 party.
  • When adding members to your conference call, it is a good idea to announce the call before connecting all parties.


To forward all calls:

  • Press FORWARD key (without lifting handset).  
  • Dial 5-digit number you are forwarding calls to.
  • Press DONE key to activate call forward.  The arrow now remains solid, and Call Forward appears in your display area, indicating that your calls are being forwarded.

To cancel forwarding, press CHECK FORWARD key (without lifting handset).  Press CANCEL FORWARD key.  Your display will tell you that Call Forward has been cancelled.

To forward calls to the same number, press FORWARD key, then DONE key (without lifting handset).

Call Pickup

To answer a ringing line:

  • Lift the handset or press Handsfree key for dial tone
  • Press PICKUP key.   This will answer the first ringing line in your pickup group.

Ring-Again (automatically call back)

To activate ring-again when you reach an internal busy signal or no answer:

  • Press RING AGAIN key when you hear a busy signal or ringing line.
  • Hang up or press GOODBYE key.
  • When you hear the Ring Again tone, lift the handset or press Handsfree key.
  • Press RING CALL key to dial the number automatically.

To cancel ring-again, press CANCEL RING AGAIN (without lifting handset) before system prompts you with the ring-again tone.

Last Number Redial

To redial the last number called, lift the handset and press your LINE or DN key once; or press your LINE or DN key twice.

Auto Dial

To store a number:

  • Press AUTO DIAL key (do not lift handset)
  • Dial number to be stored (include all necessary digits, for example: 9 + 7 digits or 9 + 1 + 10 digits)
  • Press AUTO DIAL again to store the number

To place a call using stored auto dial:

  • Lift Handset or press the Handsfree key.
  • Press the AUTO DIAL key you wish to activate. 

Speed Call

To use a departmental speed call number:

  • Lift handset or press Handsfree key
  • Press SPEED CALL USER key
  • Enter 2-digit code for the number you wish to dial  (00 thru 99)

Note: The departmental Speed Call list will be programmed into the system by a designated controller – all other telephones are users of this list only and cannot make changes, deletions, or additions to the list.


To make an intercom call:

  • Press your INTERCOM key – you will hear dial tone
  • Dial 2-digit Intercom number of the person you are calling
  • Allow short ring cycle to complete, then begin talking

To answer an intercom call:

  • You will hear a short ring cycle
  • Intercom path will open up automatically – you do not need to press a key to activate.


  • If the person you are calling is on the phone you will hear ringing. 
  • To make an Intercom conversation private, pick up the handset.


To park a call:

  • Press PARK key
  • Note Park number in the display area (190 thru 199)
  • Press OK key to Park call.

To retrieve a parked call:

  • Lift Handset or press Handsfree key
  • Dial park number assigned or announced  (190 thru 199)


To use overhead paging:

  • Lift Handset (to prevent background noise)
  • Press HOTLINE key (you may need to use SHIFT key)
  • Make announcement using the handset. 
  • Press GOODBYE key when finished.

Note: When using Overhead Paging, it is a good idea to use the handset so background noises are not heard.

Message Key

To dial into your mailbox:

  • Lift Handset or  press Handsfree key
  • Press MESSAGE key
  • Follow prompts to log into your voice mailbox

Headset Key

Press the HEADSET key to answer a call on the headset, or to switch a call from the Handset or Handsfree to Headset.

Volume Bar Control

Increase or decrease the volume of the ringing, toning, headset, handset, or speakerphone.   The volume bar control can only be used for the current activated sounds, ie…ringing, handset volume, speakerphone volume, etc.

Directory / Log Key

This key operates the Personal Directory and Call Log feature on your telephone.    The Personal Directory provides a personalized list of name and numbers and can hold up to 100 entries.   The Call Log lists the name and numbers (when available) of incoming and outgoing calls received and made by your set. 

Option Keys

The Options Key allows you to customize certain characteristics of your telephone.  Screen prompts take you step by step through each procedure.  The features available under the Options Key are:  Language, Change Feature Key Label, Screen Contrast, Volume Adjustment, Ring Type, Call Log Option, Live Dial Pad, Area Code Setup, Call Timer, Date/Time Format, Key Click, Headset Port Call, Headset Port External Alerter and Recorder Interface, Call Indication Light, On-hook Default Path, Display Diagnostics, Group Listening, and MCA Control.

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June 29, 2015