Administrator’s Guide for SIP-T58V/T58A/T56A/CP960 IP Phones40Rport feature depends on support from a SIP server.The following table lists the parameter you can use to configure rport.Parameter account.X.nat.rport[1] .cfgDescription It enables or disables the phone to add the "rport" parameter with no value in the Via header of itsrequests.PermittedValues0-Disabled1-Enabled, the INVITE Contact header uses the port in the "rport" parameter, but does not use the sourceIP address in the "received" parameter in the Via header of server's response.2-Enable Direct Process, the INVITE Contact header uses the port in the "rport" parameter, and uses thesource IP address in the "received" parameter in the Via header of server's response.Default 0Web UI Account->Advanced->RPort[1]X is the account ID. For T58V/T58A/T56A, X=1-16; for CP960, X=1.SIP Port and TLS Port ConfigurationYou can configure the SIP and TLS source ports on the phone. Otherwise, the phone uses default values (5060 forUDP/TCP and 5061 for TLS).If NAT is disabled, the port number shows in the Via and Contact SIP headers of SIP messages. If NAT is enabled, thephone uses the NAT port number (and NAT IP address) in the Via and Contact SIP headers of SIP messages, but stillusing the configured source port.The following table lists the parameters you can use to configure SIP port and TLS port.Parameter sip.listen_port .cfgDescriptionIt specifies the local SIP port.If it is set to 0, the phone will automatically listen to the local SIP port.PermittedValues 0, Integer from 1024 to 65535Default 5060Web UI Settings->SIP->Local SIP PortParameter sip.tls_listen_port .cfgDescriptionIt specifies the local TLS listen port.If it is set to 0, the phone will not listen to the TLS service.PermittedValues 0, Integer from 1024 to 65535Default 5061Web UI Settings->SIP->TLS SIP Port
