Dial plan between webrtc phone and mobile phone

Currently, I have developed a web phone using webrtc and sip.
So I’m going to make a call from my web phone to my cell phone.
For this we want to create a dial plan in this case.
But I’m not sure how to create a dial plan.
If anyone knows, please guide.

It’s the same as calling a non-WebRTC device. For example:

exten => 100,1,Dial(PJSIP/webrtc)

current I have many dialplans in extension.conf.
how can i identify the dialplan for webphone and mobile phone?

The extensions.conf contains the complete dialplan broken up into contexts, extensions, and other bits. In order to know how to make changes you need an understanding of how it works as currently written. My dialplan isn’t your dialplan so I can’t tell you where and how to change things.

anyway current I have to make dialplan with webphone–sip and mobile phone.
do you have sample of this or help me about this part?

exten => 100,1,Dial(PJSIP/webrtc&PJSIP/mobile)

That’s a sample, if I’m understanding what you mean correctly. Extension 100 in context users would dial both the PJSIP endpoint named “webrtc” and the endpoint named “mobile” at the same time.