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COMfortel 1400 IP/2600 IP/3600 IP - Firmware V2.6 - Operation/Configuration - V05 09/2016
Settings
Providers and PBXs
Note:
If
Enabled
is selected: if there are problems with unilateral call
connections, a STUN server should be used (
enabled when you are
using STUN
).
RTP NAT-Traversal
If NAT traversal is switched on and a query is sent from a local IP address
to the public network, the sending IP address is swapped with the public IP
address. This function is performed in the reverse direction for the reply.
Requirements:
•
Set DNS server
•
STUN server set up for the provider/PBX, if the
Enabled with STUN
option has been selected
•
If the
checked
option has been selected: the
registrar
enabled for the
provider/PBX
Important:
Every port opening on the NAT router is a security risk.
Perform the appropriate security measures.
Disabled
: NAT traversal is not performed by the provider/PBX. The
router, which connects the Local Area Network with the Internet, should be
a properly functioning, SIP-aware router which performs NAT traversal.
Enabled with STUN
: NAT traversal is performed by the provider/PBX.
To do this, you must also specify a STUN server.