Outbound proxy
The outbound proxy is an intermediate server that processes all VoIP requests and connections going to the provider (except for registration).
You must make settings in the outbound proxy range if:
• the IP address cannot be resolved
• an outbound proxy is present in your own network
• the provider requires an outbound proxy
Requirements for configuration
• Data provided by the VoIP provider/administrator for the Outbound proxy host and Outbound proxy port
Configuration
With the Configuration Manager:
• Identities > Options for experts > Outbound proxy
Or directly on the phone:
• Settings > Identities > Options for experts > Outbound proxy
Or using provisioning: