OneStream Programming Guide
48
Fax Mode
Select the method used to transmit faxes over SIP:
T.38 – when a fax tone is detected a re-invite will be sent and T.38 will be used
Passthrough – faxes will be transmitted in the audio stream using the original T.30 signals.
If Passthrough is selected ensure that a G.711 codec is being used (T.30 signals cannot be
carried over a compressed audio codec such as G.729).
SIP Custom Options
SIP To: field copied to destination interface DDI – when turned on the SIP To field will be used as
the destination instead of the SIP URI.
Save SIP Settings – click the button to apply the SIP Settings.
4.5.3
STUN Settings
STUN is used to overcome problems caused when communicating through Firewalls.
Enable STUN
To enable STUN set this option to “Yes”.
STUN Server
Enter the IP Address or Fully Qualified Domain Name of the STUN Server to use
STUN Port
Enter the port to use for communication with the STUN Server. The default port is 3478.
Local Networks
List any local networks which should be excluded from NAT. Communication with clients / servers
on these networks will use the OneStream’s private IP Address. Format is “network IP address /
subnet mask”. For example, to show that all IP addresses 192.168.1.x are local to OneStream you
enter a Local Network of:
192.168.1.0/255.255.255.0
Multiple local networks can be listed with 1 entry on each line.
Normally the local network will be set to the subnet containing the OneStream. For example, if the
OneStream’s IP Address is 192.168.200.23 and the subnet mask is set to 255.255.255.0 then the
local network will be set to 192.168.200.0/255.255.255.0.
Save STUN Settings – click the button to apply the STUN Settings.