Hi Salman,
Most of web applications uses CTI control to manage a line and through it make and receive calls. The main thing is to provide the application the rigth permission to use/control the telephony part in CUCM. This can be accomplished by creating an End/Application user giving him the End User and CTI Control permission.
Anyway your UC engineer/partner can dig with you into the application you are intended to realize
Hope this helps
Regards
Carlo
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