Aastra 9000i Series Administrator's Manual page 189

Configuring LAN and PC Port Negotiation
Ethernet is the computer networking technology for local area networks (LANs). You use the
LAN Port to connect to a LAN using a twisted pair 10BASE-T cable to transmit 10BASE-T
Ethernet. You use the PC Port to connect to the configuration server (your PC).
There are two Ethernet ports on the rear of the IP phones: LAN Port and PC Port. Using the
Aastra Web UI, you can select the type of transmission you want these ports to use to
communicate over the LAN. The IP phones support each of the following methods of
transmission:
• Auto-negotiation
• Half-duplex (10Mbps or 100 Mbps)
• Full-duplex (10Mbps or 100Mbps)
Auto-negotiation
Auto-negotiation is when two connected devices choose common transmission parameters. In
the auto-negotiation process, the connected devices share their speed and duplex capabilities and
connect at the highest common denominator (HCD). Auto-negotiation can be used by devices
that are capable of different transmission rates (such as 10Mbit/sec and 100Mbit/sec), different
duplex modes (half duplex and full duplex) and/or different standards at the same speed. You can
set the LAN and PC Ports on the IP phones to auto-negotiate during transmission.
Half-Duplex (10Mbps or 100Mbps)
Half-duplex data transmission means that data can be transmitted in both directions on a signal
carrier, but not at the same time. For example, on a LAN using a technology that has half-duplex
transmission, one device can send data on the line and then immediately receive data on the line
from the same direction in which data was just transmitted. Half-duplex transmission implies a
bidirectional line (one that can carry data in both directions). On the IP phones, you can set the
half-duplex transmission to transmit in 10Mbps or in 100Mbps.
Full-Duplex (10Mbps or 100Mbps)
Full-duplex data transmission means that data can be transmitted in both directions on a signal
carrier at the same time. For example, on a LAN with a technology that has full-duplex
transmission, one device can be sending data on the line while another device is receiving data.
Full-duplex transmission implies a bidirectional line (one that can move data in both directions).
On the IP phones, you can set the full-duplex transmission to transmit in 10Mbps or in 100Mbps.
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Note: The PC Port parameters are not applicable to the 6730i IP Phone.
41-001343-01 Rev 02, Release 3.2.2