We can't provide such kind of support for conference rooms.

The webphone has the usual conference feature and you should use that for conferencing.

If you need conference room, then you must implement this on your server side. Conference rooms is a typical server side feature and most softswitch has such kind of feature. You just need to enable this in your server and manage the conference room numbers and pins after your needs from there.

I understand your needs; however we can't provide any further support for this functionality.
The webphone is a client side library. Conference rooms are a server side feature.
We have a built-in conference room like functionality in the webphone, but this is only for our customer’s convenience to ease conferencing with WebRTC.

What is supported by the webphone is normal conferencing.

If you need conference rooms, then you should use your own SIP server conference rooms capability.
If your SIP server has support for conference rooms, then you can configure it after your needs and use it from the webphone just like you would use it from any other SIP endpoint.
For sending PIN codes you can use the DTMF functionality which is fully supported by the webphone. If you are using the API then you can use the dtmf function to send the PIN code. If you are using the softphone skin, then you can send DTMF digits while in call using the DialPad/NumPad button.

Ah, that is another story,

In the free version we don't have such a functionality, however if you purchase a license then we can add this for you (within maximum 3 workdays on your purchase).