Panasonic kx-ns500 Pc Programming Manual page 241

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
This interval must be 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.
Value Range
1–65535
STUN External Address Detection Retry Counter
Specifies the number of times that a query is retried when no response is received from the STUN server.
Value Range
0–8
STUN Resending Interval
Specifies the length of time until a query is retried when no response is received from the STUN server.
9.8 PBX Configuration—[1-1] Configuration—Slot—Shelf Property—V-SIPGW
PC Programming Manual 241