Asterisk Plus Phone 1.1 released

As you would expect, shortly after releasing the first version of our phone, we urgently needed to release the next version, containing a number of improvements and fixes.
So here is the list of changes:
Multiple bugs have been fixed
.
Multi tab
 support added. Now even if multiple tabs are open only one tab rings on incoming call, but call can be answered / hangup from any tab. 
Multiple SIP registrations
 mode option. Depending on your Asterisk configuration every tab will either overwrite existing SIP registration, or create a new one if  max_contacts
 option is set > 1. So multi tab mode is supported in either way if you Dial by channel or use PJSIP_DIAL_CONTACTS
 function.
Added a startup check for microphone & sound permissions
 and a notification window if any permission is not set.
Added ring volume control
. If you are a help desk operator and work with headphones, then visual control of the call is nearly enough for you, and the barely audible sound of an incoming call is what you might expect. Now each user can set a personal volume level in their settings PBX Users - Settings.
Phone icon is visible
 only if user has a SIP channel with WebRTC profile. So unprovisioned Odoo users do not see the phone icon.
Call popup notification
 was refactored. Now phone respects user's settings on call popups (popup is sticky, enable popup). 
Attended call transfer
 using PBX feature added. The DTMF control sequence is set in PBX Settings -> WebRTC tab.
Screenshots