Configuration File Parameter Guide
132
VSP716A Administrator and Provisioning Manual
Setting:
sip_account.x.stutter_dial_tone_enable
Description:
Enables or disables MWI stutter dial tone for account x.
Values:
0 (disabled), 1 (enabled)
Default:
1
Setting:
sip_account.x.nat_traversal_stun_enable
Description:
Enables or disables STUN (Simple Traversal of UDP through NATs) for
account x. STUN enables clients, each behind a firewall, to establish
calls via a service provider hosted outside of either local network.
Values:
0 (disabled), 1 (enabled)
Default:
0
Setting:
sip_account.x.nat_traversal_stun_server_address
Description:
Sets the STUN server IP address.
Values:
IPv4, IPv6 or FQDN
Default:
Blank
Setting:
sip_account.x.nat_traversal_stun_server_port
Description:
Sets the STUN server port.
Values:
1–65535
Default:
3478
Setting:
sip_account.x.nat_traversal_stun_keep_alive_enable
Description:
Enables or disables STUN keep-alives. Keep-alive packets are used to
maintain connections established through NAT.
Values:
0 (disabled), 1 (enabled)
Default:
1
Setting:
sip_account.x.nat_traversal_stun_keep_alive_interval
Description:
Sets the interval (in seconds) for sending keep-alives.
Values:
0–65535
Default:
30
Setting:
sip_account.x.keep_alive_enable
Description:
Enable SIP keep alive in service of NAT traversal and as a heartbeat
mechanism to audit the SIP server health status.
Values:
0 (disabled), 1 (enabled)
Default:
0
