[tomaz]

Most competitive soft phones have option to integrate it into web page.

these options are:

callto://
sip://

or something similar.

It would be great to introduce this option.

[nssnikson]

Hello,

is this feature realized?

[Vali_3CX]

3CXphone supports "dial:" and "sip:" parameters in command line to dial a number, such as
3cxphone.exe dial:101
or
3cxphone.exe sip:999
To use this feature as you want, you have to implement yourself a protocol handler
sip-number-launch-app-and-dial-11700.html#p60145