Nortel 1110 Installation And Operation Manual page 297

Full Duplex mode
Nortel IP Audio Conference Phone 2033
In the Configuration menu, Auto Negotiate mode is the default setting for
initial startup. Typically, the IP Phone is connected to a network that supports
Auto Negotiate, and it selects the best speed and duplex mode available.
There is no intervention required under normal operation.
Note: Changing the speed and/or duplex mode on the phone changes
both the LAN Ethernet port and PC Ethernet Port interfaces.
It is recommended that Auto Negotiate 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 will result.
If the IP Phone is connected 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 51 to enable Full Duplex mode.
Procedure 51
Enable Full Duplex mode
1 Reset the IP Phone by disconnecting and re-connecting power.
2 When the Nortel logo appears, press each of the soft keys in sequence.
See Procedure 50 on
3 If no other configuration changes are required, press the OK soft key
repeatedly until the Duplex network option appears.
4 Select 1 to enable Full Duplex mode.
5 When the Speed option appears, select one of the following:
• 0 for 10 Mbps
• 1 for 100 Mbps (default)
6 Select OK to confirm the change.
IMPORTANT!
page 291.
IP Phones Description, Installation, and Operation
Page 297 of 630