Voip Ums Interface; Router Alg Interface - Samsung OfficeServ 7400 General Description Manual

CHAPTER 4. OfficeServ 7400 Functions

4.1.2 VoIP UMS Interface

Auto Attendant/Mail Box Interface
The OfficeServ 7400 uses SIP and RPT, the VoIP protocols, to provide the auto attendant
and mailbox functions through the UMS and IP network operating in the feature server. To
interface with the VoIP UMS, the MGI module should be installed in the system.
E-mail Notice
The system periodically checks whether any e-mails are received in the e-mail account reg-
istered to the UMS and notifies the result to the user by voice or through the LCD screen or
LED of the phone. To be notified by voice, the user needs to set the TTS (Text-To-Speech)
function.

4.1.3 Router ALG Interface

NAT Application Level Gateway (ALG)
When functions, such as VoIP signal processing and the gateway function, executed
through the IP network in the system, are executed in the Network Address Transla-
tion (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 between the private IP and public IP.
This enables the OfficeServ 7400 to provide services smoothly. This function operates only
between the call server and data server.
Firewall ALG
When functions, such as VoIP signal processing and the gateway function, executed
through the IP network in the system, are executed in the network that has a firewall, the
system should be set to prohibit the firewall from cutting off the packet automatically (not
manually) for smooth firewall traversing. This function operates only between the call
server and data server.
VPN ALG
When functions, such as VoIP signal processing and the gateway function, executed
through the IP network in the system, are executed in the Virtual Private Network (VPN),
the system should be set to prevent packet blocking during 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 for smooth services. This function operates only be-
tween the call server and data server.
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