N824 User Manual
87
SIP Settings
SIP settings can be configured on
PBX→Advanced Settings→SIP Settings
page.
It is wise to leave the default setting as provided on this page. However, for a few
fields, you need to change them to suit your situation.
General
Table 18-1 SIP Settings-General
General Settings
UDP Port
Port used for SIP registrations. The default is 5060.
RTP Port Start/End Set the RTP Port range.
DTMF Mode
Set default mode for sending DTMF. Default setting: rfc4733.
Min Registration/
Subscription Time
Minimum duration (in seconds) of a SIP registration. The default is
60 seconds.
NAT
Configuration of this section is only required when you use remote extensions.
Table 18-2 SIP Settings- NAT
NAT Settings
Enable STUN
Whether to enable STUN.
STUN Address
STUN IP address.
STUN Port
STUN port.
External IP Address
The IP address that will be associated with outbound SIP
messages if the system is in a NAT environment.
External Host
Alternatively you can specify an external host, and the system
will perform DNS queries periodically.
This setting is only required when your public IP address is not
static. It is recommended that a static public IP address be used
with this system. Please contact your ISP for more information.
External Refresh
Interval
If an external host has been supplied, you may specify how often
the system will perform a DNS query on this host. This value is
specified in seconds.