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Cisco ASA Series Firewall CLI Configuration Guide
Creating the TLS Proxy Instance for a Non-secure Cisco UCM Cluster 16-20
Creating the TLS Proxy for a Mixed-mode Cisco UCM Cluster 16-21
Creating the Media Termination Instance 16-23
Creating the Phone Proxy Instance 16-24
Enabling the Phone Proxy with SIP and Skinny Inspection 16-26
Configuring Linksys Routers with UDP Port Forwarding for the Phone Proxy 16-27
Configuring Your Router 16-28
Troubleshooting the Phone Proxy 16-28
Debugging Information from the Security Appliance 16-28
Debugging Information from IP Phones 16-32
IP Phone Registration Failure 16-33
TFTP Auth Error Displays on IP Phone Console 16-33
Configuration File Parsing Error 16-34
Configuration File Parsing Error: Unable to Get DNS Response 16-34
Non-configuration File Parsing Error 16-35
Cisco UCM Does Not Respond to TFTP Request for Configuration File 16-35
IP Phone Does Not Respond After the Security Appliance Sends TFTP Data 16-36
IP Phone Requesting Unsigned File Error 16-37
IP Phone Unable to Download CTL File 16-37
IP Phone Registration Failure from Signaling Connections 16-38
SSL Handshake Failure 16-40
Certificate Validation Errors 16-41
Media Termination Address Errors 16-41
Audio Problems with IP Phones 16-42
Saving SAST Keys 16-42
Configuration Examples for the Phone Proxy 16-44
Example 1: Nonsecure Cisco UCM cluster, Cisco UCM and TFTP Server on Publisher 16-44
Example 2: Mixed-mode Cisco UCM cluster, Cisco UCM and TFTP Server on Publisher 16-46
Example 3: Mixed-mode Cisco UCM cluster, Cisco UCM and TFTP Server on Different Servers 16-47
Example 4: Mixed-mode Cisco UCM cluster, Primary Cisco UCM, Secondary and TFTP Server on
Different Servers
16-48
Example 5: LSC Provisioning in Mixed-mode Cisco UCM cluster; Cisco UCM and TFTP Server on
Publisher
16-50
Example 6: VLAN Transversal 16-52
Feature History for the Phone Proxy 16-54
CHAPTER
17 Configuring the TLS Proxy for Encrypted Voice Inspection 17-1
Information about the TLS Proxy for Encrypted Voice Inspection 17-1
Decryption and Inspection of Unified Communications Encrypted Signaling 17-1
Supported Cisco UCM and IP Phones for the TLS Proxy 17-2