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APPENDIX E
PATTON NETLINK-T1™ MODEL 2720
EIA-530 INTERFACE PIN ASSIGNMENT
DB-25 Female Connector, Terminal Interface
Pin # Signal
1 FG (FrameGround)
2 TD (Transmit Data-A, DTE Source)
3 RD (Receive Data-A, DCE Source)
4 RTS (Request to Send-A, DTE Source)
5 CTS (Clear to Send-A, DCE Source)
6 DSR (Data Set Ready-A, DCE Source)
7 SGND (Signal Ground)
8 CD (Carrier Detect-A, DCE Source)
9 RC/ (Receiver Clock-B, DCE Source)
10 CD/ (Carrier Detect-B, DCE Source)
11 XTC/(External Transmitter Clock-B, DTE Source)
12 TC/(Transmitter Clock-B, DTE Source)
13 CTS/(Clear to Send-B, DCE Source)
14 TD/(Transmit Data-A, DTE Source)
15 TC(Transmitter Clock-B, DCE Source)
16 RD (Receive Data-A, DCE Source)
17 RC (Receiver Clock-A, DCE Source)
18 LL (Local LIne Loop)
19 RTS/(Request to Send-B, DTE Source)
20 DTR (Data Terminal Ready-A, DTE Source)
22 DSR/ (Data Set Ready-B, DCE Source)
23 DTR/(Data Terminal Ready-B, DTE Source)
24 XTC (External Transmitter Clock-A, DTE Source)
25 TM (Test Mode)
APPENDIX E
(continued)
PATTON ELECTRONICS MODEL 2720
INTERFACE PIN ASSIGNMENT
X.21 Interface
(DB-15 Female Connector)
(DTE /DCE Configuration)
Pin # Signal
1. . . . . . . . . . . . Frame Ground
2. . . . . . . . . . . . T (Transmit Data-A)
3. . . . . . . . . . . . C (Control-A)
4. . . . . . . . . . . . R (Receive Data-A)
5. . . . . . . . . . . . I (Indication-A)
6. . . . . . . . . . . . S (Signal Element Timing-A)
7 . . . . . . . . . . . BT (Byte Timing-A)
8 . . . . . . . . . . . SGND (Signal Ground)
9 . . . . . . . . . . . T/ (Transmit Data-B)
10 . . . . . . . . . . . C/ (Control-B)
11 . . . . . . . . . . . R/ (Receive Data-B)
12 . . . . . . . . . . . I/ (Indication-B)
13........................S/ (Signal Element Timing-B)
14 .......................BT/ (Byte Timing-B)