Cable Connection Problems; 10Base-T Cables - Avaya 8800 Troubleshooting Manual

Hardware troubleshooting
2. Ensure that your terminal program has the appropriate settings configured and that
3. If the console screen still fails to show a prompt, use Enterprise Device Manager to

Cable connection problems

Port connection problems are usually traced to a poor cable connection or to an improper
connection of the port cables at either end of the link. To remedy such problems, make sure
that the cable connections are secure and that the cables are connected to the correct ports
at both ends of the link. If you are using homemade cables, ensure that the cables are wired
correctly.

10BASE-T cables

Cabling for 10BASE-T networks can consist of two-pair Category 3, 4, or 5 unshielded twisted
pair (UTP) wiring. However, to prepare for future upgrades to Fast Ethernet, Avaya strongly
recommends that you use all Category 5 cable in your network.
Ethernet 10BASE-T network installations use cables consisting of two pairs of twisted pair
wires—one pair to send data and one to receive data. These wires must connect to another
10BASE-T station that has the sending pair attached to its receiving pair and vice versa. If the
two nodes are wired alike, they both attempt to send data out on the same RJ-45 pins. In this
case, a straight-through cable does not work, but a crossover cable operates normally.
72 Troubleshooting
your cable is wired properly. For more information, see Avaya Ethernet Routing
Switch 8800/8600 Installation — Modules, NN46205-304.
check the port settings. In the Device view, select the Console port, and then choose
Configuration, Edit, Serial Port.
Check to see that the port settings are 9600 baud and 8 data bits. If necessary,
change the port settings to match.
Comments? infodev@avaya.com
July 2013