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COMfortel 1400 IP/2600 IP/3600 IP - Firmware V2.8 - Advanced Information - V02 06/2017
Settings
Providers and PBXs
Requirements:
•
Set DNS server
•
STUN server set up for the provider/PBX, if the
Activado con uso de
STUN
option has been selected
•
If the
Activado
option has been selected: the
Registrador
enabled for
the provider/PBX
Important:
Every port opening on the NAT router is a security risk.
Perform the appropriate security measures.
Activado
: NAT traversal is performed by the provider/PBX. The SIP
request also contains an "rport" part in which the IP addresses used here
(local, public) are transported.
Desactivado
: 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.
Activado con uso de STUN
: NAT traversal is performed by the
provider/PBX. To achieve this, you must also enter a
Servidor STUN
under
Ajustes
.
Note:
If
Activado
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