AT&T 555-230-894 用户手册
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TN464C, D, E, F Option Settings
September 1995 Issue 1
H-43
Set the impedance and bit rate as follows:
Table H-31.
Option Switch Settings on TN464E/F
120 Ohms
Twisted pair
75 Ohms
Coaxial requiring 888A adapter
32 Channel
2.048 megabits per second
24 Channel
1.544 megabits per second