9.8 PBX Configuration—[1-1]Configuration—Slot—Shelf Property—V-SIPGWCommon settings for all of the V-SIPGW cards installed in the Virtual Shelf can be programmed.Icon DescriptionIn this section, the following icons show the different parameter type.Icon Description for Parameter TypeManual programming is compulsory under certain conditions.Manual programming is optional.MainSIP Client Port NumberSpecifies the port number of the PBX used for communications with the SIP server.Value Range1024–65535NAT TraversalSpecifies the NAT traversal method.– STUN: A STUN Server, used alongside the SIP Server, finds out the global IP address of the router withNAT enabled.– Fixed IP Addr.: The global IP address of the router with NAT enabled is fixed.NoteManual programming is optional except when programming is required depending on the networkconditions.Value RangeOff, Fixed IP Addr., STUNNAT - Voice (RTP) UDP Port No.Specifies the starting port number of the dynamic ports used for NAT Traversal.Value Range1024–65535NAT - Keep Alive Packet Sending AbilitySpecifies whether to send Keep Alive packets in order to maintain the NAT binding information. This settingmay be compulsory depending on the network conditions.Value RangeDisable, Enable240 PC Programming Manual9.8 PBX Configuration—[1-1] Configuration—Slot—Shelf Property—V-SIPGW
