Slot Card Specifications and Connection Information
Unchannelized DS3 card
MAX TNT Hardware Installation Guide
A-33
Unchannelized DS3 card
The unchannelized DS3 card supports 1 unchannelized T3 line. The entire bandwidth of this
line can be used for a frame relay connection. A second set of BNC connectors on the card can
be connected to a second DS3 card for redundant operation. Each MAX TNT chassis can
contain up to two unchannelized DS3 cards.
Figure A-21 shows the unchannelized DS3 card.
Figure A-21. Unchannelized DS3 card
Specifications
Table A-26 lists the specifications for the unchannelized DS3 card.
Table A-26. Unchannelized DS3 card specifications
Category
Specification
Electrical
DSX-3 per ANSI T1.404.
Line buildout
0 to 225 feet (0-68.58m).
226 to 450 feet (68.8-137.6m).
Receive equalization
Based on cable length and transmitter.
Line code
B3ZS.
Line rate
44.736Mbps ± 20ppm.
Frame format
Per ANSI T1.107a (C-bit parity).
Alarm signaling
Upon a DS3 Red Alarm, a yellow signal is sent on the
DS3 and an AIS is sent on DS2s.
Upon a DS2 Red Alarm, an AIS is sent on DS1s.
Connectors
75-ohm BNC coaxial (two line, two backup).
Interfaces per card
One port per card, up to five cards per system.
Card dimensions
5.6 inches high x 10.7 inches long
(14.2cm x 27cm).
Card weight
~2 pounds (0.9kg).
