My WAG160N drops out at 20 seconds? What is the solution?

Overview
Step 1: Login to the WAG160N
Step 2: Setup Port Triggering
Step 3: Enter Port Values

Step 1: Login to the WAG160N
  1. Go to the 192.168.1.1
  2. Enter the username: admin and password: admin
Step 2: Setup Port Triggering
  1. Go to Appications and Gaming Menu tab
  2. Go to Port Range Triggering
Step 3: Enter Port Values
  1. Enter the following information
  2. Application Name: SIP
  3. Triggering Range Start Port : 5060
  4. Triggering Range End Port : 5061
  5. Forwarded Range Start Port : 5060
  6. Forwarded Range End Port : 5061
  7. Application Name: RTP
  8. Triggering Range Start Port : 16384
  9. Triggering Range End Port : 20384
  10. Triggering Range Start Port : 16384
  11. Triggering Range End Port : 20384