Interface Specifications; Console Port; Line A And Line B E3 Ports - 3Com Dual E3 Asynchronous Getting Started Manual

A-2 A A: T
PPENDIX ECHNICAL
Interface
Specifications

Console Port

Line A and Line B E3
Ports
S
PECIFICATIONS
Electrical Specification:
Connector:
Configuration:
Transmission Method:
Transmission Rate:
Electrical Specification:
Connectors:
Transmission Media:
Timing Source:
Framing:
Line Coding:
RS-232-C (EIA/TIA-232-E standard)
RJ-45, 8 position modular jack
Data Terminal Equipment (DTE)
Unbalanced RS-232
38,400 bps maximum
E3 interface
BNC coaxial connectors; one transmit (TX) and
one receive (RX)
75 ohm (nominal impedance) coaxial cable
User selectable between:
Internal
Network
ATM Direct Mapping (ADM)
Physical Layer Convergence Protocol (PLCP)
High Density Bipolar 3 Zeroes (HDB3)