User guide

MultiVOIP User Guide T1 PhoneBook Configuration
321
About SPP Proxy/NAT Device Parameters
IP
Network
SPP Client/Registrar System
Client
Voip
Public
Client
Voip
Publ ic
Client
Voip
Pu blic
Client
Voip
Public
Proxy/NAT
Device
Public IP
Private IP
IP
IP
IP
IP
Registrar
Voip
A Proxy/NAT device is sometimes used
in a Client/Registrar SPP voip system
where the registrar voip is in a private
network but serves client voips on a
public network. The Proxy/NAT device
isolates (protects) the registrar voip
from the p ublic network.
In such cases, you must check the
“Enable SPP Proxy/NAT device” checkb ox
in the Phonebook Configuration screen
of the Registrar voip. The p rivate registrar
voip can then function with the clie nt voips
using the public IP address of the Proxy/NAT
device. You must enter this address in the
Public IP Address field.