Slot Card Specifications and Connection Information
T3 card
MAX TNT Hardware Installation Guide A-31
T3 card
A T3 line is a communications circuit composed of seven DS2s, each of which includes four
DS1s, each of which in turn is composed of 24 DS0s, for a total of 672 DS0 channels. The T3
card supports one T3 line.
Figure A-20 shows the T3 slot card.
Figure A-20. T3 Card
Specifications
Table A-24 lists the specifications for the T3 card.
Table A-24. T3 card specifications
Category Specification
Electrical standards DSX-3 per ANSI T1.404.
Line buildout 0-225 feet (0-68.58m), or 226-450 feet (68.88-137.6m).
Receive equalization Based on cable length and transmitter.
Line code Bipolar 3-zero substitution (B3ZS).
Line rate 44.736Mbps ± 20ppm.
Frame format Per ANSI T1.107a (M23 or C-bit parity).
Alarm signaling When a DS3 Red Alarm occurs, a Yellow Alarm is sent on
the DS3 line and an AIS is sent on DS2 lines.
Upon a DS2 Red Alarm, AIS is sent on DS1s.
Connectors Four 75-ohm BNC coaxial (two lines and two backup
lines).
To Next Page
Loading...
