AudioCodes Mediant 4000 SBC User Manual page 747

CHAPTER 41 SBC Configuration Wizard
● SIP Trunk (IP-PBX with SIP Trunk): The device connects the Enterprise IP PBX with
the Internet Telephony Service Provider (ITSP) or SIP Trunk Provider. The IP PBX resides
on the Enterprise LAN, while the ITSP resides on the WAN. Only calls between the IP
PBX and ITSP traverse the device. Calls between Enterprise phones, users and certain
SIP messages (REGISTER, SUBSCRIBE and NOTIFY) are managed locally by the IP
PBX and do not traverse the device.
● SIP Normalization (two IP-PBX's): The device performs SIP "normalization" of traffic
between two IP PBXs. The first IP PBX resides on the Enterprise LAN (co-located with
the device) and the second IP PBX resides on the WAN (or at another branch site). Only
calls between the IP PBXs traverse the device. Calls between the phones and users of the
same IP PBX, and certain SIP messages (REGISTER, SUBSCRIBE and NOTIFY) are
managed locally by each IP PBX and do not traverse the device.
● Hosted IP-PBX (IP-PBX with Users): The device connects phones (users) with the
"hosted" IP PBX. The users reside on the Enterprise LAN (co-located with the device) and
the IP PBX resides on the WAN (or at the datacenter). All traffic between users and IP
PBX traverse the device, including SIP REGISTER, SUBSCRIBE and NOTIFY
messages.
● Remote Users (IP-PBX with Remote Users): The device connects remote phones
(users) with the "local" IP PBX. The IP PBX resides on the Enterprise LAN (co-located
with the device) and the remote users reside on the WAN (or at the datacenter). All traffic
between users and IP PBX traverse the device, including SIP REGISTER, SUBSCRIBE
and NOTIFY messages.
2. If you selected the SIP Trunk application in Step 1, do the following:
a. From the 'IP-PBX' drop-down list, select the IP PBX model. If the model is not listed,
select Generic IP-PBX.
b. From the 'SIP-Trunk' drop-down list, select the SIP trunk provider. If the provider is not
listed, select Generic SIP Trunk.
c. To generate a configuration template based on the individual properties of the selected IP
PBX and SIP Trunk, instead of using the existing template for the specific combination,
select the 'Override template' check box.
3. If you selected any application except SIP Trunk in Step 1, from the 'Template' drop-down list,
select the interoperability configuration template.
4. From the 'Network Setup' drop-down list, select the physical network topology:
● Two ports: LAN and WAN: The device connects to the network through two separate
physical network links (interfaces). The first interface ("LAN") is connected to the
Enterprise LAN (typically, a switch) and has a private IP address. The second interface
("WAN") is connected to the DMZ port of the Enterprise router and has a public (globally
routable) IP address. Each link may be accompanied with a backup link for Ethernet link
redundancy.
● One port: LAN: The device connects to the Enterprise LAN (typically, a switch) through a
single physical network link (interface). The interface ("LAN") has a private IP address.
You must enable port forwarding on the Enterprise router to forward all VoIP traffic from the
ITSP (located on the WAN) to the device. The exact port forwarding configuration is
shown on the Conclusion page and consists of the device's address, SIP port (e.g. 5060)
and a media port range (e.g. 6000-6999).
● One port: WAN: The device connects to the DMZ port of the Enterprise router through a
single physical network link (interface). The interface ("WAN") has a public (globally
routable) IP address. You must enable port forwarding on the Enterprise router to forward
all VoIP traffic from the device to the IP PBX (located on the LAN). The exact port
forwarding configuration is shown on the Conclusion page and consists of the IP PBX
address, SIP port (e.g. 5060) and a media port range (e.g. 6000-6999).
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Mediant 4000 SBC | User's Manual