Telephony: improve

Change-Id: Ie31a9c1032a4ea8e7f03d0c222169753bb26062a
Telephony: direct call suport

Change-Id: I035d69c09c6b6684a00b13b70628b55ae8d3eadf
Telephony: fix direct call

Change-Id: I58550a1b17a70f06d9fb0b2c65ee1a71b2578aa0