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2. Configure a fixed IP address for the Forum 523/524. To do
this, call up the Configurator and open the Network: LAN
page. Click on the Change button.
3. Enter the current IP address configuration in IP address and
Network mask. Confirm with Apply.
4. Configure the Forum 523/524's DHCP server to assign IP
addresses. To do this, call up the Configurator and open the
Network: DHCP page. Click on the Change button.
5. From Status, select the address assignment option. Confirm
with Apply. The DHCP page is re-displayed.
6. Add the configured VoIP system telephones to the list of IP
addresses. Click on the New button.
7. Enter the VoIP system telephone's IP address and MAC
address. Enter the IP address reserved by the DHCP service
programme. Confirm with Apply.
Restart the Forum 523/524 and all connected VoIP system tele-
phones.
Tip: Configuring multiple VoIP terminals can be facilitated by
using dynamic address assignment (please refer to Dynamic
Address Assignment for Specific Devices starting on page 93).
Start Procedure
It may sometimes be useful to understand a VoIP system tele-
phone's start procedure. Examples:
A complex DHCP address assignment prevents the operation of
the Forum 523/524's DHCP server within the LAN.
A VoIP system should be operated with a non-broadcast-
capable IP connection. This may be an RAS connection, a VPN
connection or another type of routed connection.
An external DHCP server can also control a VoIP system tele-
phone's start procedure. In this case, system software matching
the type of VoIP system telephone must be transferred via TFTP.
VoIP System Telephones
Voice over IP (VoIP)
131
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