How to mark-up telephone numbers on Intranet for Mitel Unified Communicator Advanced

Question

I am using Mitel Unified Communicator Advanced 2.0 with the Mitel.DialBHO plugin for Internet Explorer. The plugin tries to detect numbers in web pages that are formatted like phone numbers and then overlays a click-to-dial hyperlink.

My question is, how would I go about marking up the phone directory on our intranet to explicitly tell the plugin that something is a phone number? We have three digit extention numbers that we use internally and the plugin won't auto-detect these as dialable numbers.

I have tried the usual markup of <a href="callto:555">ext 555</a> and <a href="tel:555">ext 555</a>, but neither of these have the desired effect. callto tries to launch NetMeeting and tel doesn't have a registered program and IE displays an error to this effect.

TL;DR:

How do you make a hyperlink (or any other tag with a special attribute) tell Mitel UC Advanced to dial a number when clicked?

Bonus question

It strikes me that the Stack Exchange may have a better place to ask this question. Any idea which one would be best?

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UPDATE

So I have found the format I need to use it <a href="DialFromUC://{number}/">{number}</a>, but it won't accept 3 digit numbers. Unified Communicator will open, but says that it received an "Invalid Command".

Sending it a fully formed phone number works, but if I convert our internet three digit number to the equivelent external number, it uses an outside line instead of routing it internally.

Any way of sending it a three digit number?

Answer 1

If you want to dial an internal number from Mitel Unified Communicator, the format is as follows (where 555 is your desired extention number).

<a href="DialFromUC://ext.555/">Click here to dial me!</a>