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Using Lync as a SIP Softphone?

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I have just registered for a trial of a hosted PBX service from

I want to know if it is possible to use my Office 365 Lync 2010 client as a softphone and if so how to go about it?

I have these instructions from VOIP phone, which make it sound like it should be possible:

Download and run the software with all its default settings

If the Windows security box pops up, click 'unblock'

Go to your desktop and double click on the Zoiper icon

Open the settings page by clicking on the little spanner icon

Click 'Add new SIP account'

Enter your name (anything)

Domain =

Username = Your account number and extension with a * in between. eg 3xxxxxxx*2xx You can check your extensions here

Password = XXXXXX (your 6 digit password for the extension you're setting up - You can find here )

Caller ID the name you wish people to see when you call them

Click 'Apply' then 'OK'


Your phone should now say registered - try calling 152

However the only option I can see in Lync Client is "Integrate with my phone" and this is greyed out?

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