Panasonic Pure IP-PBX KX-TDE100 Programming Manual page 6

1.1 Information about IP Telephony Service
WAN
STUN STUN STUN
Server Server Server
ISP/ITSP ISP/ITSP ISP/ITSP
LAN
Note
•
If an ISP/ITSP uses a device such as SBC (Session Border Controller), you may not have to enable
the NAT Traversal feature.
•
A STUN Server is supplied by an ISP/ITSP, and not included with the PBX.
6 Programming Manual for Virtual SIP Trunk Card
Internet
STUN STUN STUN
SIP SIP SIP
Server Server Server
PC
PBX with
V-SIPGW16 Card
Fixed IP Address Fixed IP Address Fixed IP Address
SIP SIP SIP
Server Server Server
ISP/ITSP ISP/ITSP ISP/ITSP
Router
(NAT enabled)
Switching
Hub
IP-PT