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APPENDIX C
MODEL 2703RC INTERFACE STANDARDS
EIA-530 & V.35 Interface
DB25 Female Connector
Pin
Signal
Source
1
FG (Frame Ground)
-
2
TD(Transmit Data)
DTE
3
RD (Receive Data)
DCE
4
RTS (Request to Send)
DTE
5
CTS (Clear to Send)
DCE
6
DSR (Data Set Ready)
DCE
7
SGND (Signal Ground)
-
8
CD (Carrier Detect)
DCE
9
RC/ (Receiver Clock-B)
DCE
10
CD/ (Carrier Detect-B)
DCE
11
XTC/(External Transmit Clock) DTE
12
TC/ (Transmit Clock-B)
DCE
13
CTS/ (Clear to Send)
DCE
14
TD/ (Transmit Data-B)
DTE
15
TC (Transmit Clock-A)
DCE
16
RD (Receive Data)
DCE
17
RC (Receiver Clock)
DCE
18
LLB (Local Line Loop)
DTE
19
RTS/ (Request to Send)
DTE
20
DTR (Data Terminal Ready)
DTE
21
RDL (Remote Digital Loop)
DTE
22
DSR/ (Data Set Ready)
DCE
23
DTR/ (Data Terminal Ready)
DTE
24
XTC (External Transmit Clock) DTE
25
TM (Test Mode)
DTE
Copyright © 1998
Patton Electronics Company
All Rights Reserved
Dear Valued Customer,
Thank you for purchasing Patton Electronics products! We do appreciate
your business. I trust that you find this user manual helpful.
We manufacture one of the widest selections of data communications
products in the world including CSU/DSU's, network termination units, pow-
ered and self-powered short range modems, fiber optic modems, interface con-
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Patton Electronics Company
7622 Rickenbacker Drive
Gaithersburg, MD 20879 USA
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It is our business to serve you. If you are not satisfied with any aspect of
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please let us know.
Thank you.
Burton A.Patton
Vice President
P.S. Please tell us where you purchased this product.
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