tapi - How to edit callto registry so it automatically dials a number in Windows Phone Dialer -

i have isdn phone supports tapi/cti , connects pc via serial port. can use windows dialer (dialer.exe) pre installed on windows tell phone number call. works , have lift reciever!

what want able use callto: url when clicked, automatically opens application , begins dialling (like skype do). in registry editor, can edit command from

"c:\progra~2\skype\phone\skype.exe" "/callto:%l" 

to

"c:\windows\system32\dialer.exe" "/callto:%l" 

now when click on callto: url, program opens nothing happens. have tried few different variations in "/callto:%l" part getting nowhere.

is registry edits? can done program?

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edit: on second thoughts, if cant achieve want above, can set callto link when clicked, copies link clipboard? manual paste can done.

we use dial.exe app uses dialer. can find more info here: http://www.atrandom.iansharpe.com/phone-dial.php

i'll taking code , modifying support tel: links work on cell phones callto: not.