external-address

determined by SIP container based on network interfaces 

Specifies the address that is externally visible to clients. The clients see the entire cluster. In some cases, when providing addresses to clients, the servers must use this address to make sure the client can call back the load-balanced cluster instead of the individual server instance that provided the callback. 

external-sip-port

SIP port of default sip-listener (developer profile)

Specifies the SIP port that is externally visible to clients for call backs.  

external-sips-port

SIPS port of default sip-listener (developer profile)

Specifies the secure SIP (SIPS) port that is externally visible to clients for call backs.