Allied Telesis AT-CM70S - Manual (Page 29)

Converteon Media Converter Line Cards Reference Guide
29
10/100Base-TX Twisted Pair Ports
The 10/100Base-TX twisted pair ports featured on the Converteon™ line
cards are described below.
Type of
Connector
The 10/100Base-TX twisted pair ports feature 8-pin RJ-45 connectors.
Only four of the pins are used when a port is operating at 10 or 100 Mbps.
For the port pinouts, refer to “RJ-45 Twisted Pair Port Pinouts” on page 89.
Speed
The twisted pair ports are 10/100Base-TX compliant and are capable of
both 10 megabits per second (Mbps) and 100 Mbps speeds. Since the
ports are IEEE 802.3u Auto-Negotiation compliant, you can let the
converter set the port’s speed automatically. With Auto-Negotiation, the
converter automatically matches the highest possible common speed
between the converter port and the end-node. For example, if an end-
node is capable of only 10 Mbps, the converter sets the port connected to
the end-node to 10 Mbps. Alternatively, you can set the port speed
through the management software.
Note
Auto-Negotiation is activated as the default on the twisted pair port
on the converter. To deactivate Auto-Negotiation and set the speeds
manually, refer to the AT-S70 Management Software User’s
Guide.
Duplex Mode
The10/100Base-TX twisted pair ports on a Converteon™ line cards can
operate in either half- or full-duplex mode. The twisted pair ports are IEEE
802.3u-compliant and will Auto-Negotiate the duplex mode setting.
If desired, Auto-Negotiation on the converter ports can be disabled so that
you can set the duplex mode manually through the converter’s AT-S70
management software.
Maximum
Distance
The maximum operating distance of the 10/100Base-TX twisted pair ports
is 100 meters (328 feet).
Type of Cable
For 10 Mbps, the port requires Category 3 or better (100 ohm shielded or
unshielded) twisted pair cabling. For 100 or 1000 Mbps, the port requires
Category 5 or Enhanced Category 5 (5E) (100 ohm shielded or
unshielded) twisted pair cabling.