Auerswald COMpact 5200 Advanced Information page 495

Registre Port

REGISTER requests are sent to the specified registrar (also known as
a SIP registrar, registry, SIP server, SIP registry server). Enter this data as
an IP address or a URL.
Notes:
The page Synthèses > Ports shows an overview of the PBX ports
(incoming and outgoing).
You should only switch off the registrar if the VoIP provider requires you
to do so. No NAT Keep-Alive is performed if the registrar is disabled. An
internal network is usually protected from external manipulation by, for
example, a firewall integrated in the router. Without NAT Keep-Alive, the
firewall's security functions will defend you against attempted accesses
from the Internet. For this reason, you may need to implement port
forwarding for incoming SIP packets on the SIP port set up in the VoIP
provider's configuration.
Caution: Each time a port is opened on the router, this
creates a potential source of danger.
Time limit for registration (1 to 60 min.)
The registration time specifies how many minutes the PBX waits before
reregistering itself with the VoIP provider.
Note: In the test phase, after configuring the VoIP provider, we
recommend you enter a low value (e.g. three minutes). After completing
COMpact 5200/5200R/5500R - Firmware V7.2 - Advanced Information V04 07/2018
• It is essential you put additional protective measures in
place.
Settings – Réseaux publics
Voix sur IP (VoIP)
495