Cable and Ethernet Specifications
This appendix gives specifications for the following:
•
Male-to-male null modem cable—connects a data terminal equipment (DTE)
device (terminal or PC) to the C0 port (See page B-2.)
•
Male-to-male straight-through RS-232 cable—connects a data communications
equipment (DCE) device (modem) to the C0 port (See page B-3.)
•
High-density 68-pin cable—connect modems to the high density ports on the
PortMaster 25 (See page B-4.)
•
High-density 50-pin cable that splits into 50-pin connectors—connects U.S.
Robotics Quad modems to a PortMaster 25 (See page B-7.)
•
RS-232 cable—connects external modems to an asynchronous ports
(See page B-10.)
•
V.35 cable—connects a T1/E1 line to a W1 port (See page B-11.)
•
X.21 cable—connects a T1/E1 line to a W1 port (See page B-12.)
•
RS-530 cable—connect a T1/E1 line to a W1 port (See page B-13.)
•
Category 5 twisted pair cable for the S/T interface—connects an ISDN BRI line to
the S/T interface (See page B-14.)
•
Category 5 twisted pair cable for the U interface—connects an ISDN BRI line to
the U interface (See page B-14.)
High-density 10-pin cable for the U interface—connects all four BRI ports on the
•
U interface to a punchdown block via the high density (HD) port (See page B-15.)
•
Ethernet interface specifications. (See page B-16.)
Cable and Ethernet Specifications
B
B-1