“The US will open “lines of communication” with Russia to avoid “misjudgment and miscalculation” as a US-led coalition conducts strikes against ISIS in Syria. Moscow is assisting government forces in their fight against the terror group.”
“This morning, [Defense] Secretary [Ashton] Carter directed his staff to open lines of communication with Russia on deconfliction,” Pentagon press secretary Peter Cook told reporters at a press briefing.

http://www.rt.com/news/316987-pentagon-russia-communications-syria/