...
To be able to modify the fields within the SIP proxy server object, the SIP Profile ID field within the SIP Profile - SGP object must have the ID configured to something other than ID:0. First, create a SIP Profile with an ID other than 0. Once this is completed, the SIP Proxy object created under that SIP Profile (SGP) object and can be edited/modified.
When creating and configuring the SIP Proxy object, the SIP Proxy is considered an external gateway to the IMG 2020. Before an IP address or Hostname is displayed in the IP Address or Hostname field of the SIP Proxy object, the External Gateway object with either the IP address or Hostname must first be configured. Once this is completed, the External Gateway configured will appear in the Gateway field of the SIP Proxy object. Once the External Gateway is selected, the IP Address or Hostname of the gateway selected will be automatically populated in the IP Address or Hostname field below it.
SIP Proxy - Overview / Configuration
SIP Proxy - Overview / Configuration
Field Descriptions
Outbound Proxy
...