Phone Network39Parameter account.X.nat.udp_update_time[1] <MAC>.cfgDescriptionIt configures the keep-alive interval (in seconds).Example:account.1.nat.udp_update_time = 30Note: It works only if “account.X.nat.udp_update_enable” is set to 1, 2 or 3.PermittedValues Integer from 15 to 2147483647Default 30Web UI Account->Advanced->Keep Alive Interval(Seconds)[1]X is the account ID. For T54S/T48S/T48G/T46S/T46G/T29G, X=1-16; for T52S/T42G/T42S, X=1-12; forT41P/T41S/T27P/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21(P) E2, X=1-2; for T19(P) E2, X=1.Rport ConfigurationYealink IP phones support rport described in RFC 3581. It allows a client to request that the server sendsthe response back to the source port from which the request came.Rport 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] <MAC>.cfgDescription It enables or disables the NAT Rport feature.PermittedValues0-Disabled1-Enabled2-Enable Direct ProcessDefault 0Web UI Account->Advanced->RPort[1]X is the account ID. For T54S/T48S/T48G/T46S/T46G/T29G, X=1-16; for T52S/T42G/T42S, X=1-12; forT41P/T41S/T27P/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21(P) E2, X=1-2; for T19(P) E2, X=1.SIP Port and TLS Port ConfigurationYou can configure the SIP and TLS source ports on the IP Phone. Otherwise, the IP phone uses defaultvalues (5060 for UDP/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 isenabled, the phone uses the NAT port number (and NAT IP address) in the Via and Contact SIP headersof SIP messages, but still use the configured source port.The following table lists the parameters you can use to configure SIP port and TLS port.
