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App A. Pin and signal assignments
This appendix contains details of the pin and signal assignments on the Speed Touch
591s user and T1/E1 ports.
The user port on the Speed Touch 591s has a unidirectional driver, presenting a fixed
DCE gender.
Table App A-1 summarizes all interface, gender, clocking, cable, and connector
configurations supported.
Figure App A-1 shows the viewpoints used in the pin and signal assignment figures.
Figures App A-2 to App A-4 identify the pin and signal assignments for the data port
and the connector. Arrows indicate the signal direction with respect to the Speed
Touch 591s.
•
Output drivers (generators) have an arrow pointing away from the port.
•
Input drivers (loads) have an arrow pointing toward the port.
•
Grounds (common returns) have only a signal name (no arrow).
•
Unused pins have neither a name nor an arrow (leave unconnected).
Table App A-1 Speed Touch 591s configuration summary and cable selection
Interface
Gender
(3)
V.36/TIA/EIA-449
DCE
V.35
DCE
X.21
DCE
Notes
(1)
Gender presented to the attached data device.
(2)
Type of physical connector presented to the attached data device.
(3)
TIA/EIA-449 signals use V.36 mnemonics.
A-2
(1)
Clocking
Slave-locked or
external-locked
Slave-locked or
external-locked
Slave-locked
Figure App A-1 Viewpoints used in pin and signal assignment figures
User
port
ST591s
Cable part
Cable connector
number
90-3576-01
DB37 female
90-3577-01
M34 female
90-3578-01
DB15 female
Data cable
connection at
Data
customer
cable
premises end
Speed Touch 591s Technical Practices
90-8785-01
(2)
Figure
reference
A-2
A-3
A-4
CPE
15137
February 2001
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