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Note:
If G150 is getting an IP address from another DHCP server, it MUST receive the
Note:
same IP address each time because the address is also configured in
Communication Manager.
Once the DHCP status of the G150 has been decided, follow the instructions within
LAN1
on page 133 to configure LAN1.
Configuration Options with IP Phones
It is normally recommended that the LAN ports on the front of the G150 (configured via LAN1
on Manager's System configuration form) are used to connect local IP phones and the G150
(via LAN1) operates as the IP phones' DHCP server.
There are three options for connecting the G150 to the Communication Manager if there are IP
phones connected locally to the G150.
LAN2: Connection to the Communication Manager can be configured via Manger's LAN2
tab on the System configuration form. The LAN2 configuration controls the ethernet port
labeled "WAN" on the front of the G150.
WAN Expansion Card: The WAN slot in the back of the G150 supports a WAN expansion
card (v.35/V.24/X.21). If used, the WAN expansion card can be configured for connection
to the Communication Manager via the Services configuration form on Manager.
LAN1: Connection to the IP phones and the Communication Manager can be configured
via Manager's LAN1 tab on the System configuration form.
Using LAN2 for Connection to Communication Manager
The LAN2 configuration controls the ethernet port (labelled WAN on the front of the G150) and
this port can be used to connect the G150 to the Communication Manager.
Once all configuration has been made on the Communication Manager and G150, the WAN
port on the front of the G150 can be used to provide WAN connectivity via WAN access
equipment, which typically would consist of one of the following:
Router to serve as the IP gateway from the premises out to the IP-based WAN.
Access Concentrator to multiplex the LAN and TDM-based enterprise traffic streams into
an aggregated stream to present to the WAN.
The role of the G150 Media Gateway within the data network is important to its overall
functioning. The G150 has the ability to manage the customer's IP network through its integral
DHCP server. The G150 can be configured to hold a pool of IP addresses for users on the Local
Area Network. When a user's PC is powered up, the G150 system will allocate an IP address
for the duration of the user's logon session. The DHCP server also provides the user's PC with
the address of the Domain Name Service (DNS) server and the Windows Name Service WINS)
server. Alternatively, for customers who have a separate DHCP server, G150 can be configured
to obtain its IP address from that server or be set with its own dedicated static IP address. This
Connecting G150 to the Network & Communication Manager
Configuring
Issue 1 June 2005
129
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