Cisco ASA Series Cli Configuration Manual page 1226

Troubleshooting the Phone Proxy
Configuring Your Router
Your firewall/router needs to be configured to forward a range of UDP ports to the IP phone. This will
allow the IP phone to receive audio when you make/receive calls.
Note
Different Cable/DSL routers have different procedures for this configuration. Furthermore most
NAT-capable routers will only allow a given port range to be forwarded to a single IP address
The configuration of each brand/model of firewall/router is different, but the task is the same. For
specific instructions for your brand and model of router, please contact the manufacturer's website.
Linksys Routers
Step 1
From your web browser, connect to the router administrative web page. For Linksys, this is typically
something like
Step 2
Click Applications & Gaming or the Port Forwarding tab (whichever is present on your router).
Step 3
Locate the table containing the port forwarding data and add an entry containing the following values:
Table 1-3
Application
IP phone
TFTP
Step 4
Click Save Settings. Port forwarding is configured.
Troubleshooting the Phone Proxy
This section includes the following topics:
•
•
•
•
•
•
Debugging Information from the Security Appliance
This section describes how to use the debug, capture, and show commands to obtain debugging
information for the phone proxy. See the command reference for detailed information about the syntax
for these commands.
Table 1-4
Cisco ASA Series CLI Configuration Guide
1-28
http://192.168.1.1
Port Forwarding Values to Add to Router
Start
1024
69
Debugging Information from the Security Appliance, page 1-28
Debugging Information from IP Phones, page 1-32
IP Phone Registration Failure, page 1-33
Media Termination Address Errors, page 1-41
Audio Problems with IP Phones, page 1-42
Saving SAST Keys, page 1-42
lists the debug commands to use with the phone proxy.
.
End Protocol
65535 UDP
69 UDP
Chapter 1 Configuring the Cisco Phone Proxy
IP Address Enabled
Phone IP address Checked
Phone IP address Checked