User guide

Port Assignment, Termination, Cable Length 59
Installation
z LAN1: You should use this port for the connection to your
company’s network.
z LAN2 and LAN3: You should use these LAN ports to connect
your VoIP system telephones.
Tip: Use one of the LAN ports, LAN1, LAN2 or LAN3 to temporar-
ily connect a service PC.
WAN Port
Forum 523/524 can be connected to an external DSL modem and
to an Internet router. The most secure Internet port, which is also
separate from the LAN, is a WAN port. Transfer rates and operat-
ing modes are switched automatically („Auto-Sensing function”).
Connections requiring a crossover connection cord are also auto-
matically switched.
Connect the ethernet port of the DSL modem to the Forum 523/
524’s WAN port. Forum 523/524 will operate the DSL modem
using the PPPoE protocol.
Forum 523/524 network connection via ISDN and DSL
TAE
DSL
Splitter
NTBA
Switch
DSL & Uk
0
DSL
Modem
Uk
0
S
0
Forum
S
0
WAN LAN1
PC
Net
PPPoE
LAN2/3 IP-Tel
IP-Tel