Ethernet interface:
Number of ports: 12
Cabling: conforms to the
Cable differential impedance: 85 ohms to 115 ohms over 1 to 16 MHz band
Cable propagation velocity: >.585c
Host interface: 3Com ONline System Concentrator bus interface standard
Installation attachment: Two thumbscrews on the mounting bracket
50-Pin Connector and Cable
Figure A-1 illustrates the cable pinouts for the Security Module female connector and the 50-Pin cable male connector. This figure also shows how to connect Port 1 of the Security Module to a desktop transceiver using the TIA-568A wiring standard for an RJ-45 connection. Connections between the module and the desktop device can be made through a patch panel, Hydra cable, or punchdown block. It is critical that the data path be preserved along the route from the module's Telco connector to the remote end, especially when going through patch panels or punchdown blocks.
Specifications A - 3