Using: username=441392790295&extension=301&password=*******&grant_type=password&url=https://platform.ringcentral.com/restapi/oauth/token
should generate the same results as a detailed request for calls from the RingCentral Dashboard i.e all calls to our huntgroup. Instead it just provides call for 301 the supervisor extn which rarely answers any calls in the huntgroup so calls are shown as "missed" when in fact they went to another extn in the huntgroup:
"uri" : "https://platform.ringcentral.com/restapi/v1.0/account/672175064/extension/672175064/call-log/F7YKFKZ...;, "id" : "F7YKFKZMWkP2fzk", "sessionId" : "286649505064", "startTime" : "2016-10-06T17:40:09.000Z", "duration" : 3, "type" : "Voice", "direction" : "Inbound", "action" : "Phone Call", "result" : "Missed", "to" : { "phoneNumber" : "+441392790295", "name" : "Supervisor 2" }, "from" : { "phoneNumber" : "+447725850384" }