Com Port Requirements; Transceiver Requirements - Cabletron Systems HubSTACK SEHI-34 User Manual

INSTALLATION REQUIREMENTS/SPECIFICATIONS

2.4 COM PORT REQUIREMENTS

The RJ45 COM port supports access to a Local Management Console.
The Console port supports a Digital Equipment Corporation, VT 320™
terminal or PC emulation of the VT 320™ terminal. Figure 2-8 shows
the pinouts for the RJ45 COM port.

2.5 TRANSCEIVER REQUIREMENTS

When you connect an external network segment, via a transceiver, to
the SEHI with an EPIM-A, the following requirements must be met:
• The transceiver or Ethernet Device to which the module will be
connected must meet IEEE 802.3 standards, and/or Ethernet
Version 1.0 or Version 2.0 standards.
• The Signal Quality Error (SQE) test function on the
transceiver must be disabled if you connect it to a repeater or
to an Ethernet Version 1.0 device. In addition, some Version 2.0
equipment does not support the SQE test. Devices that do not
support SQE test interpret the SQE test pulse as a collision.
Page 2-16
1. Transmit Data
2. Data Set Ready
3. Not Used
4. Not Used
Figure 2-8. COM Port Pinouts
1 2 3 4 5 6 7 8
COM
5. Signal Ground
6. Data Terminal Ready
7. Not Used
8. Not Used