3.3.1 Main

NAT - Voice (RTP) UDP Port No.

Specifies the starting port number of the dynamic ports used for NAT Traversal.

Value Range

2–65000 (even number only)

NAT - Keep Alive Packet Sending Ability

Specifies whether to send Keep Alive packets in order to maintain the NAT binding information. This setting may be compulsory depending on the network conditions.

Value Range

Disable, Enable

NAT - Keep Alive Packet Type

Specifies the type of Keep Alive packets to be sent out.

Value Range

Blank UDP, None

NAT - Keep Alive Packet Sending Interval

Specifies the interval time until the next Keep Alive packet is sent.

Note

It is required to set this interval shorter than the NAT binding time of the router. The default value is appropriate in most cases.

Value Range

1–60 s

NAT - Fixed Global IP Address

Specifies the global IP address of the router with NAT enabled. This setting is compulsory if Fixed IP Addr. is selected in NAT Traversal.

Value Range

1.0.0.0–223.255.255.255

STUN Ability

Specifies whether to open a protocol port of the STUN server to enable STUN feature.

Value Range

Disable, Enable

STUN Client Port Number

Specifies the port number of the PBX used for communications with the STUN server.

Programming Manual for Virtual SIP Trunk Card

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Panasonic KX-TDE100 manual NAT Voice RTP UDP Port No, NAT Keep Alive Packet Sending Ability, NAT Keep Alive Packet Type