VTech VSP600 Administrator And Provisioning Manual page 21

NAT Traversal
Setting
Enable STUN
Server address
Server port
Enable UDP Keep-Alive
Keep-alive interval (secs)
Music On Hold Settings
Setting
Enable Local MoH
Session Timer
Setting
Enable Session Timer
Minimum value (secs)
Maximum value (secs)
VSP600/VSP601 Administrator and Provisioning Manual
Description
Enables or disables STUN (Simple Traversal of UDP through
NATs) for account x. The Enable STUN setting allows the
base station 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.
Enables or disables UDP keep-alives. Keep-alive packets are
used to maintain connections established through NAT.
Enter the interval (in seconds) for sending UDP keep-alives.
Description
Enables or disables a hold-reminder tone that the user
hears when a far-end caller puts the call on hold.
Description
Enables or disables the SIP session timer. The session timer
allows a periodic refreshing of a SIP session using the RE-
INVITE message.
Sets the session timer minimum value (in seconds) for
account x.
Sets the session timer maximum value (in seconds) for
account x.
21 WebUI: System