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Chapter 4: Configuring your MVPGSM
Multi-Tech Systems, Inc. MVPGSM 47
NAT Traversal
Setting the NAT (Network Address Translation) Traversal parameters. STUN (Simple Traversal of UDP through
NATs) is a protocol for assisting devices behind a NAT firewall or router with their packet routing.
NAT Traversal
Descriptions for NAT Traversal screen fields are presented in the table below.
NAT Traversal Definitions
Field Name Values Description
Enable (STUN) Y/N Enables STUN client functionality in the MultiVOIP GSM.
STUN (Simple Traversal of UDP through NATs (Network Address Translation))
is a protocol that allows a server to assist client gateways behind a NAT
firewall or router with their packet routing.
Name/IP (Server) n.n.n.n IP address of the STUN server.
Port (Server;
NAT/STUN)
port;
default=
3478
The data port (TDM time slot) at which STUN info will be transmitted and
received.
Keep Alive (Timers;
NAT/STUN)
60
–
3600
(seconds)
The interval at which the STUN client sends indicator (“Keep Alive”) packets to
the STUN server to determine whether or not the STUN server is available.