Chapter 3 Network Connections; Connecting To An Stp Cable - Cabletron Systems T2015 Installation Manual

The network connections for all Cabletron Systems Token-Ring
adapters are the same. An adapter can be connected to the network
through either the adapter's DB-9 shielded twisted pair port or
RJ-45 port. The port should have been selected during installation
procedures. Refer to the appropriate installation chapter for your
model adapter for further information on selecting a port.
3.1

CONNECTING TO AN STP CABLE

The Token-Ring adapter can be connected to a shielded twisted
pair lobe link through the DB-9 port. The shielded twisted pair
connection consists of two twisted pairs:
• One pair (RX+, RX-) for the incoming (receive) signal from the
upstream neighbor in the Token-Ring.
• One pair (TX+, TX-) for the outgoing (transmit) signal to the
downstream neighbor in the Token-Ring.
The T2015 Token-Ring adapter (Figure 3-1) is used here for a
connection example. To connect the adapter to a Token-Ring lobe
link via the DB-9 port:
• Connect the DB-9 connector (2, Fig. 3-1) on the end of the lobe
link to the DB-9 port (1).
• Tighten the screws (3) to secure the connector to the port.
Once the PC is powered up and on the network, check the
condition of the bicolor LED. The bicolor LED will be off when the
PC is first powered up. The LED will turn green when the adapter
has accessed the network. If the bicolor LED turns red, there is a
wire fault present. See Section 1.6, LANVIEW LEDs, for more
information.
CHAPTER 3
NETWORK CONNECTIONS
NETWORK CONNECTIONS
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