What is NAT?
Why is this bad for SIP?
IETFsAnswer: Interactive Connectivity Establishment (ICE)
The ICE 9-Step Program to Recovery
•Step 1: Allocation
•Step 2: Prioritization
•Step 3: Initiation
•Step 4: Allocation
•Step 5: Information
•Step 6: Verification
•Step 7: Coordination
•Step 8: Communication
•Step 9: Confirmation
