3.4.5.1 Global IP AddressGlobal IP AddressDescription Specifies the global IP address of your network.Note• You must enter a value in this field if at least 1 of [Line 1]–[Line 8] is set to [Yes], or when port numbers are specified in[Channel 1–3].• The global IP address will reflect SIP messages and RTPpackets.Value Range IP address in dotted-decimal notation ("n.n.n.n" [n=0-255])Default Value Not stored.3.4.5.2 Enable Global IP Address Usage per LineLine 1–Line 8Description Selects whether to enable the NAT Traversal feature for each line.Value Range • Yes• NoDefault Value No3.4.5.3 External RTP PortChannel 1–3Description Specifies the external RTP port number used for voice communicationfor each channel.Value Range 0, 1024–49150 (0: Disable, even number only)Note• Each channel must be set to a unique port number, and all portnumbers must be an even number.• You cannot specify here the same port number as any of theport numbers specified for the individual lines in [SourcePort] in 3.6.2.5 SIP Source Port. In addition, you cannotspecify a port number that is 1 less than a port number specifiedin [Source Port] if the source port number is an odd number.• All 3 channels must be set to either enable or disable at thesame time.Default Value 074 Administrator Guide Document Version 2010-083.4.5 Static NAPT Settings
