Please be aware we do not provide Configuration Support for these devices. This documentation is available to assist with basic functionality, but all Support related questions should be directed to the manufacturer for these devices.

Administrator Guide

For additional information beyond this basic guide, please see the Mitel User Guide's available from their website.

Mitel 6873i SIP Phone User Guide

Default Passwords

Web UI
User: Admin
Password: 22222

Phone Interface
Password: 22222


These devices can be provisioned using the Keypad on the phone's interface, Using the Web Interface, or using DHCP Options.

From the Phone's Interface

From the Phone's interface, you can enter the following information.

Download ProtocolHTTP
HTTP Port80
HTTP Pathcfg

Web UI

Once logged into the Aastra Mitel phones as an Admin, navigate to the Configuration Server on the left-hand side.

Download ProtocolHTTP
HTTP Pathcfg
HTTP Port80
DHCP Options

These devices Support Option 66. If your firewall supports the use of Option 66 as a string you can use "" as the value and provision these phones over DHCP.



Aastra/Mitel Overrides often contain spaces in the override so it is necessary to put quotes around the override as well as the value.

Example: "topsoftkey1 type"="blf"

Because of the spacing in the overrides, our platform does NOT support the use of Aastra Overrides as Domain overrides.

Setting up Softkey Overrides

There are two types of softkeys that can be provisioned Bottom Keys, and Top Keys. Bottom Keys refer to the buttons under the screen on the phone, and Top Keys refer to the buttons on the sides of the screen. We will go over the Top Keys, for more information on the bottom keys, please refer to the Mitel admin guide.

Common Top Key Typesblf, blfxfer, Call Fwd, Empty, Filter, lcr (last call return), park, phonelock, pickup, redial, speeddial, speeddialxfer, transfer, xml
About BLF Types

There are two types of BLF's we would use commonly in configuration, and the type of BLF will depend on the behavior you are trying to achieve. "blf" and "blfxfer" will both subscribe to the presence of another extension, when you are on an active call pressing a "blf" key will start a new call to this extension, while pressing a "blfxfer" will transfer your active call to that extension.

Example BLF Keys

If we were going to Subscribe to the presence of John, we would set the label as John, the value as his extension, the type as either "blf" or "blfxfer", and the line to 1 (assuming this is Line 1 on the phone). The number after the topsoftkey indicates which button you are setting up.

"topsoftkey1 type"="blf"
"topsoftkey1 label"="John"
"topsoftkey1 value"="1000"
"topsoftkey1 line"="1"

"topsoftkey2 type"="blf"
"topsoftkey2 label"="Jane"
"topsoftkey2 value"="1001"
"topsoftkey2 line"="1"

Example Park Keys

Because of how the Park functionality works on Aastra's, we would NOT want to use the key type of "park" instead provision a Call Park key as a "blfxfer" and Park will work as intended.

"topsoftkey3 type"="blfxfer"
"topsoftkey3 label"="Park 1"
"topsoftkey3 value"="700"
"topsoftkey3 line"="1"

"topsoftkey4 type"="blfxfer"
"topsoftkey4 label"="Park 2"
"topsoftkey4 value"="701"
"topsoftkey4 line"="1"

Packet Captures

It is possible to take a packet capture from the Web UI of these devices by following the steps below. 

  1. Navigate to Capture (on the left-hand side of the screen)
  2. Then press Start
  3. Once you are done capturing Navigate back to the Capture Page and click Save As, then stop your capture.