Specifications

Reference Guide
A-7
HSU Cards
BellCore GR-63-CORE Issue 1 Network Equipment-Building System (NEBS) Requirements:
Physical Protection
ITU-T V.35 Data Transmission of 48 kbps using 60-108 kHz Group Bank
Circuits
V.11 (10/96) Electrical characteristics for balanced double-current interchange
circuits operating at data signaling rates up to 10 Mbps
V.28 Electrical characteristics for unbalanced double-current
interchange circuits
G.704 Synchronous frame structures used at 1544, 6312, 2048, 8488 and
44 736 Kbps hierarchical levels
V.25bis (Model 8213 only) Automatic answering equipment and general
procedures for automatic calling equipment on the general
switched telephone network including procedures for disabling of
echo control devices for both manually and automatically
EIA RS-422 Electrical Characteristics of Balanced Voltage Digital Interface
Circuits
RS-449 General Purpose 37 Position and 9 Position Interface for DTE and
DCE Equipment Employing Serial Binary Data Interchanges
RS-530 High Speed 25 Position Interface for Data Terminal Equipment,
Including Alternative 25 Position Connector
RS-366 Interface Between Data Terminal Equipment and Automatic
Calling Equipment for Data Communication
UL 1950 UL Standard for Safety of Information Technology Equipment
CEN EN 500 081-1 Electromagnetic compatibility generic emission standard Part 1
Residential, commercial and light industry
EN 500 082-1 Electromagnetic compatibility generic immunity standard Part 1
Residential, commercial and light industry
EN 60 950/A2 Safety of information technology equipment including electrical
business equipment
SRU Card
BellCore GR-63-CORE Issue 1 Network Equipment-Building System (NEBS) Requirements:
Physical Protection
AT&T TR54075 Subrate Data Multiplexing - A Service of DATAPHONE Digital
Service
ITU-T V.24 Definitions of Interchange Circuits Between DTE and DCE
V.28 Electrical characteristics of unbalanced double-current
interchange circuits
X.50 Division 3 Fundamental Parameters of a Multiplexing Scheme for
the International Interface Between Synchronous Data Networks
(note: does not support 600bps data)
V.14 Transmission of Start-Stop Characters over Synchronous Bearer
Channels (using Async to synch converters)
EIA RS232-C Interface Between DTE and DCE Employing Serial Binary Data
Interchange
UL 1950 UL Standard for Safety of Information Technology Equipment
CEN EN 500 081-1 Electromagnetic compatibility generic emission standard Part 1
Residential, commercial and light industry
EN 500 082-1 Electromagnetic compatibility generic immunity standard Part 1
Residential, commercial and light industry
EN 60 950/A2 Safety of information technology equipment including electrical
business equipment