Zhone Technologies IMACS-200 - Manual (Page 261)

System Standards and Specifications A-9
A.4.5 HSU Port Specifications
Number of
Data Ports
Physical Interfaces Electrical Interfaces
2 2 female 25-pin DB25 D-connectors ITU-T V.35
Data Speeds N x 56k and N x 64k, where N = 1 to 24 (up to 1536 kbps) - Software Configurable by
DS0
Data Format Synchronous
Data Protocol Transparent
Transmit Clock per Port Internal or External (software selectable)
Clock Polarity per Port Normal or inverted (software selectable)
Data Polarity per Port Normal or inverted (software selectable)
Diagnostics
RTS/CTS Delay: per
Port 0, 30, 60 or 100 ms (software selectable by port)
RTS Handshake per
Port Permanent, local, ignore, local (software selectable by port)
BER Test per Port Active or inactive
BER Test Patterns All Marks, All Spaces, 1:1, 1:7, QRSS, 511, 2047
Local Loopback per
Port None, towards DTE, towards the network
Performance Statistics Errored Seconds, Unavailable Second, Severely Errored Second, Burst Errored Second, Loss of
Packet Seconds, Loss of Frame Count
Standards Compatibility
ITU-T V.35
V.11 (10/96)
V.28
Data Transmission of 48 kbps using 60-108 kHz Group Bank
Circuits.
Electrical characteristics for balanced double-current interchange
circuits operating at data signaling rates up to 10 Mbit/s.
Electrical characteristics for unbalanced double-current
interchange circuits.
EIA Recommendations
RS-530 High Speed 25 Position Interface for Data Terminal Equipment,
Including Alternative 25 Position Connector.