Panasonic KX-NS700 Installation Manual page 294

8.4.1 IP Telephony Service
WAN
Internet
STUN STUN STUN
STUN STUN STUN
Server Server Server
ISP/ITSP ISP/ITS ISP/ITSP
LAN
V-SIPGW16 Card
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.
294 Installation Manual
SI SIP SIP
Server Server Server
Router
(NAT enabled)
Switching
PC
PBX with
Fixed IP Address Fixed IP Address Fixed I Address
SIP SI SIP
Server Server Server
ISP/ITSP ISP/ITSP ISP/ITS
Hub
IP-PT
Document Version 2016-03