User's Manual

Full Duplex mode 53

Full Duplex mode

In the Configuration menu, autonegotiate mode is the default setting for

initial startup. Nortel recommends that autonegotiate mode is used on the

network and the IP Phone. Use Full Duplex mode only when the network

is forced Full Duplex for 100BT Full Duplex mode; otherwise, a duplex

mismatch results. No intervention is required under normal operation.

Changing the speed and changing the duplex mode on the phone changes

both the LAN Ethernet port and PC Ethernet Port interfaces.

ATTENTION

Nortel recommends that autonegotiate mode is used on the network and the IP

Phone. Use Full Duplex mode only when the network is forced Full Duplex for

100BT Full Duplex mode; otherwise, a duplex mismatch results.

If the IP Phone connects to a network configured for Full Duplex mode

only, the IP Phone cannot automatically negotiate the proper configuration.

Therefore, in this instance, to allow the IP Phone to work at the optimum

speed and duplex mode, Full Duplex mode must be enabled.

Use Procedure 5 “Enabling Full Duplex mode” (page 53) to enable Full

Duplex mode.

Procedure 5

Enabling Full Duplex mode

Step Action

1 Reset the phone by disconnecting and reconnecting power.

2 When the Nortel logo appears, press each soft key in sequence.

3 If you do not require other configuration changes, press OK

repeatedly until the Speed option appears.

4 Select one of the following:

• 1 for 10 Mb/s

• 2 for 100 Mb/s (default)

5 Press OK repeatedly until the Duplex network option appears.

6 Select 1 to enable Full-duplex mode.

7 Select OK to confirm the change.

8 Press OKEnter repeatedly. The IP Phone 2001 saves the

configuration and then reboots.

Nortel Communication Server 1000

IP Phones Fundamentals

NN43001-368 02.07

5 February 2009