Regional Jet 900 (CRJ900)
Air Traffic Control Fully Certified
Communication Breakdown; Confusion
ATC Issue All Types; Airspace Violation All Types
General None Reported / Taken
Human Factors
I was working Sector 21 and I just took RADAR on a B737 climbing to 15;000 FT and a CRJ9 checked on climbing to 15;000 FT. I thought it was the B737 checking on and I climbed him to FL230. The CRJ9; which was in a different sector and I didn't have RADAR on; took the clearance and climbed. I never caught the wrong call sign. I would recommend listening to the full read back until moving on to the next thing.
ZLA Controller confused two different Air Carrier callsigns and issued a climb clearance to the incorrect aircraft. The incorrect read back was missed by the Controller.