Operation Manual

COMfortel 1400IP/2600IP/3600IP - Firmware V2.2G - Operation and Configuration V03 07/2015 459
Settings
Providers and PBXs
Configuring the Registrar
Using the Telephone to Configure a Domain
Requirements:
– Set DNS server
1. Tap on Apps > Settings > Providers & PBXs.
2. Tap on the name of the provider/PBX.
3. Under SIP settings, tap on Domain and then enter the domain in the entry field.
Possible entries:
4. Tap on OK.
Configuring the Registrar
The registrar (also known as the SIP registrar, SIP server or SIP registry server) is the IP
address or URL of the provider/PBX with whom/on which the telephone is registered. If the
registrar is enabled, REGISTER requests are sent to the registrar.
Notes:
The registrar should only be disabled if the provider requires this.
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.
That is why you may need to set up port forwarding for incoming SIP packets
in the router for the SIP port set up in the provider's/PBX's configuration.
Important: Every port opening on the router is a security risk. Apply the
appropriate security measures.
You can configure the registrar as follows:
• Separately for the provider or PBX
• Using the configuration manager
• Using the telephone
IP address with a range of 0 to 255 (example: 114.188.1.125)
URL (example: sipprovider.uk)