A320
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 210; Flight Crew Total 18000; Flight Crew Type 4000
Aircraft Equipment Problem Critical
Flight Crew Overcame Equipment Problem; General Declared Emergency
Aircraft
While in cruise at FL280 we lost Auto Cabin Pressurization.  As the cabin altitude began to climb through 9;500 feet; we began an emergency descent to 10;000 feet where we complied with ECAM and Emergency Procedures.  We continued to our destination where we completed a normal approach and landing.
We advised ATC and started an emergency descent and then descended to 8;000 feet MSL.  Consulted with Maintenance Control and Dispatch.  Selected Pressurization System 2 and regained control of pressurization.
An A320 Flight Crew performed an emergency descent after noting the cabin altitude approaching 10;000 feet.  When level; they performed appropriate ECAMs and checklists; switched to an alternate system and continued to their destination.