REVIEW DRAFT #1—CISCO CONFIDENTIAL
2-3
Cisco WRP500 Administration Guide
Chapter 2 Configure Your System for ITSP Interoperability
Configure NAT Mapping
Step 1 Log in as administrator.
Step 2 Under the Vo ice menu, click SIP.
Step 3 In the NAT Support Parameters section, enter the following settings:
• Handle VIA received: yes
• Handle VIA rport: yes
• Insert VIA received: yes
• Insert VIA rport: yes
• Substitute VIA Addr: yes
• Send Resp To Src Port: yes
• STUN Enable: Choose yes.
• STUN Server: Enter the IP address for your STUN server.
Voice tab > SIP > NAT Support Parameters
Step 4 Under the Vo ice menu, click Line 1 or Line 2 to choose the line interface that you want to modify.
Step 5 In the NAT Settings section, enter the following settings:
• NAT Mapping Enable: Choose yes.
• NAT Keep Alive Enable: Choose yes (optional).
Voice tab > Line N > NAT Settings
Note Your ITSP may require the WRP500 to send NAT keep alive messages to keep the NAT ports
open permanently. Check with your ITSP to determine the requirements.
Step 6 Click Save Settings.
Note You also need to configure the firewall settings on your router to allow SIP traffic. See “Firewalls
and SIP,” on page 5.
IMAGE WILL BE SUPPLIED (SCREENSHOT) - replaces 194557
IMAGE WILL BE SUPPLIED (SCREENSHOT) - replaces 194556