Merge commit 'f3a935f6aa421110c7b6f36f922223c195f751bc' * commit 'f3a935f6aa421110c7b6f36f922223c195f751bc': Make SipService listen to WIFI state change events.
Merge commit 'f3a935f6aa421110c7b6f36f922223c195f751bc' * commit 'f3a935f6aa421110c7b6f36f922223c195f751bc': Make SipService listen to WIFI state change events.