Core Mobile Dialer Features Making and receiving SIP calls Internet connection over WIFI, 3G or EDGE Making and receiving SIP calls from behind any VoIP blockades/firewalls Native address book from the mobile phone Redial button Call status Last calls log Summary window showing last call cost and duration Balance information Loudspeaker Hold Call transfer Audio control Sending and receiving SMS (over SIP) Instant messaging over XMPP, chat and presence “Call thru” and “Callback” functionality Digits Interception