Mitel 5212 IP

...features and applications enabled by Mitel IP-based IP Communications Platforms. You can configure all 12 key for different options like i.e. your headsets, DND,prefix and lot more. You need a Mitle license to make it work with Mitel PBX. Per license cost almost 200$ per channel and phone cost you around 400$.
You can use this Phone without Mitel as well using SIP protocol and you don't need any license t some of the function might don't work ...
...phone is basically designed for MItel IP-PBX system which is known as Mitel ICP 300.
Mitel 5212 Phone is an IP based phone and it supports both SIP and Mitel IP (MiNET) protocols on a single hardware platform. You can use it with its power adopter which you have to buy it separately from Mitel or with POE (power over Ethernet) switch (any vendor), I was using Telesys switch.

The phone out look is totally professional, good ... more

My 3 year experience with this phone was awesome; I have never seen such a phone with so many options. This dual port, multi-line display IP speakerphone provides user-programmable access to the features and applications enabled by Mitel IP-based IP Communications Platforms. You can configure all 12 key for different options like i.e. your headsets, DND,prefix and lot more. You need a Mitle license to make it work with Mitel PBX. Per license cost almost 200$ per channel and phone cost you around 400$.
You can use this Phone without Mitel as well using SIP protocol and you don't need any license t some of the function might don't work for you if using with other technology as I am still digging out how to use the programmable keys with asterisk PBX or directly using any long distance carrier . You can configure this phone using Web GUI when using SIP protocol.

This phone is basically designed for MItel IP-PBX system which is known as Mitel ICP 300.
Mitel 5212 Phone is an IP based phone and it supports both SIP and Mitel IP (MiNET) protocols on a single hardware platform. You can use it with its power adopter which you have to buy it separately from Mitel or with POE (power over Ethernet) switch (any vendor), I was using Telesys switch.

The phone out look is totally professional, good for corporate use but I don't like the orange display screen it has, I am sure they can give better screen as the cost is too high.

I don't recommend this product to home users who want to use it with SIP, cos the alternate options are much cheaper in price and same options as programmable key not working for me till yet, neither the support people told me much on this,

I recommend this to corporate use only who have MItel solution implemented and can spend soo much money on mitel technology. If some one wants to spend a good amount of money on a best technology for telephony should go for Mitel. The rest can use Asterisk PBX for free. Some use full link
www.trixbox.org
www.asterisk.org
Exact Mitel 5212 IP Phone features from Mitel:
Support for SIP or MiNET protocols
Handsfree speakerphone
Twelve programmable multi-function keys with dual color LED indicators
Eight function keys: Hold, Superkey for Feature Access, Fixed Message, Transfer / Conference, Redial, Cancel, Speaker, Microphone
Two-line, 20 character white backlit display with contrast control
Dual port (10 / 100 Mb Switched Ethernet)
Dedicated headset jack
Speed calling
Conference call setup
Page Send / Receive
Automatic Call Distribution (ACD) agent support
Customizable center panel
Browser based desktop configuration tool
Wall mountable
Multiple powering options (802.3af compliant)

Hope this become helpful for some people.

Cheers 

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