AT&T 5140T User Manual page 89

Appendix
D
VTDU Use/s
Manual
PIN
NO.
FI.JNCTION
SOI.JRCE
I
Data
Canier
Detect
(DcD)
DCE
SignalDCD
9
Reserved
lor Tesling GND through
3.65K
10 Reserved for Testing
GND through
3.65K
11
Unassigned
Shorted to
Pin
10
12
Secondary
RR
DCE
SignalGND
t3
Secondary CTS
DCE
SignatGND
14
Secondary
TXD
DTE
GND through
3.65K
15 Transmit Timing
(rxc)
DCE
Transmit
Timing
16 Secondary RXD DCE
SignalGND
17 Receive
Timing
(RXc)
DCE
Receive
Timing
18 Unassigned
GND through
3.65K
19
Secondary
RTS
DTE
GND through
3.65K
20 Data Terminal
Ready (DTR)
DTE Data
Terminal
Ready
2'.|
SignalQuality
Detector
DCE
GND
through
3.65K
n
RirB Detector (Rl)
DCE Ring
Detector
23
Data
Signal
Rate
Selector
DCE
GND through
3.65K
24
Transmit Timing
DTE
GND through
3.65K
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