How to install and configure SIPTAPI
Posted by on 22 October 2013 06:22 PM


SIPTAPI is a SIP based call-control client which can be used to initiate phone calls.

SIPTAPI is not a full SIP client, thus a dedicated

SIP client – a SIP softphone or hardphone – is needed

SIPTAPI will instruct the SIP client to call a certain number

How to get it


License: GPL


Copy siptapi.tsp into the windows\system32 directory

Go to your Control Panel click on Phone And Modem Options, choose Advanced, Click Add, Choose SIP TAPI Service Provider

Then highlight SIP TAPI Service Provider and Choose Configure…

Configure your username, password and SIP domain.

Sip domain will be:

User will be your 3NG Account ID

Password will be your 3NG Account Service password

Authentication-User will be your 3NG Account ID

Outlook 2013

Click on a contact from the People view then click more and Call.

Once the New Call dialog pops up, click on Dialing options and make sure you have the Connect using line – set to SIPTAPI.

Click OK then you can start the call.


**Issues with MS Comunnicator or Lync 2013:

                When either of these are installed, outlook will default to them for making calls.  In order to fix this please use the following steps.

-If you want to use Outlook 2007/2010 with TAPI you have

to make sure to not use Office Communicator, otherwise Outlook

tries to initiate the call via Office Communicator instead of TAPI.


In short, to use Outlook 2007/2010 with TAPI you have to (untested):

    HKEY_LOCAL_MACHINE\Software\Microsoft\Office\Outlook\Call Integration

If you are using 64bit version of Windows/Outlook try the following key instead (or create both keys):

    HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\Outlook\Call Integration


For more details please refer to:

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