What are the possible causes for an Access Failure in UMTS?

• Missing Neighbors
• Poor Coverage
• Pilot Pollution / Spillover
• Poor Cell Reselection
• Core Network Issues
• Non – availability of resources. Admission Control denies
• Hardware Issues
• Improper RACH Parameters
• External Interference

LTE The Vision Beyond 3G by Nortel
Ericsson Parameters to make Handover Easier