Router Alg Interface; Voip Functions; Voip Network - Samsung OfficeServ 7200 General Description Manual

OfficeServ 7200 General Description Guide
1.4

Router ALG Interface

NAT Application Level Gateway (ALG)
When functions such as the VoIP signal process function and gateway function exe-
cuted through the IP network in the OfficeServ 7200 are executed in the Network
Address Translation (NAT) network, the conversion between the private IP address
and public IP address should be performed. In this case, the call server and the data
server interface with each other and share the information on the conversion be-
tween the private IP and public IP, which enables the system to provide services
smoothly. Each IP address is translated automatically. This function operates only
between the call server and data server.
Firewall ALG
When functions such as the VoIP signal processing function and gateway function
executed through the IP network in the OfficeServ 7200 are executed in a network
with a firewall, the system should be set to prohibit the firewall from cutting off the
packets not manually but automatically for smooth firewall traversing. This func-
tion operates only between the call server and data server.
VPN ALG
When functions such as the VoIP signal process function and gateway function exe-
cuted through the IP network in the OfficeServ 7200 are executed in the Virtual
Private Network (VPN), the system should be set to prevent packet blocking during
the IP address conversion due to tunnelling. In this case, the call server and data
server interface with each other and share the tunnelling conversion information.
This function operates only between the call server and data server.
2

VoIP Functions

VoIP functions indicate the functions executed in the SIP server. The SIP server is a
software module operating in the feature server. The SIP server is based on the
standard SIP protocol and provides the gateway function for smoothly processing
signals between the existing phones and the standard SIP equipment. It also pro-
vides an interface function through which the standard SIP equipment can work
with the phones.
2.1

VoIP Network

To communicate with another system through the VoIP networking, the MGI
module must be installed. VoIP networking functions coincide with those of PRI/Q-
SIG networking.
© Samsung Business Communications
CHAPTER 4. OfficeServ 7200 Functions
Page 4-3