SIP Phone Configuration Guide
Enables or disables STUN (Simple Traversal of UDP through NATs) for
account 1. The Enable STUN setting allows the HD10X to identify its
publicly addressable information behind a NAT via communicating with a
STUN server.
Enter the STUN server IP address or domain name.
Enter the STUN server port.
Enable or disables UDP keep-alive. Keep-alive packets are used to maintain
connections established through NAT.
Keep-Alive Interval (sec)
Enter the interval (in seconds) for sending UDP keep-alive.
3.2.1.14 Music on Hold Settings
Enables or disables a hold-reminder tone that the user hears when a far-
end caller puts the call on hold.
Enter the lower limit of the Real-time Transport Protocol (RTP) port range. RTP
ports specify the minimum and maximum port values that the phone will use
for RTP packets.
Set the session timer minimum value (in seconds) for account 1.
Set the session timer maximum value (in seconds) for account 1.