Not getting fromNumber for inbound calls with using Developer Account

Hi, Sharmilan You should use 'from'. It seems a bug for undefined with fromNumber. I will check it. For call in same company account extensions, RingCentral will show extension number for callee by default. You can try to call the widget with your own phone. Or you can set RingCentral to show phone number when call between same company account in RingCentral sandbox service web service.devtest.ringcentral.com

Thank you very much, two more clarification. In the response the 'from' should be an object mentioned in documentation like,
"from": {
  "phoneNumber": "+PHONE_NUMBER",
  "name": "LOCATION_NAME",
  "location": "LOCATION_NAME"
}
And
For Inbound response :id related to local IP address mixed variable but for Outbound :id it works fine.
This also the same development issue?