ATL Telecom AM64/512 - Manual (Page 21)

AP PEN DIX A - In ter face Pin Con nec tions
25 Way D-type X.21 bis (V.24/V.28) Con nec tor pin al lo ca tion
Pin Cir cuit
De scrip tion Type SITS
89/43
7 102 Com mon Re turn Com mon
2 103 Trans mitted Data Load
3 104 Re ceived Data Gen er a tor
4 105 Re quest to Send Load
5 106 Ready for Sending Gen er a tor
6 107 Data Set Ready Gen er a tor
20 108.1 Con nect Data Set to Line Load
8 109 Data Chan nel Re ceived Line Sig nal De tec tor Gen er a tor
15 114 Trans mit ter Sig nal El e ment Tim ing (DCE) Gen er a tor
17 115 Re ceiver Sig nal El e ment Tim ing (DCE) Gen er a tor
21 140 Re mote Loopback for Point-to-Point cir cuits Load
18 141 Lo cal Loopback Load
25 142 Test In di ca tor Gen er a tor
24 113 Ex ter nal Trans mit ter Sig nal El e ment Tim ing Load
15 Way D-type X.21 (V.11) Con nec tor pin al lo ca tion
Pin Type SITS
A-wire B-wire Unbal Cir cuit De scrip tion 89/43
8 G Sig nal Ground / Com mon Re turn Com mon
15 1 S EXT Ex ter nal Sig nal El e ment Tim ing Gen er a tor
2 9 T Trans mit Load
4 11 R Re ceive Gen er a tor
3 10 C Con trol Load
5 12 I In di ca tion Gen er a tor
6 13 S Sig nal El e ment Tim ing Gen er a tor
7 14 B Byte Tim ing Gen er a tor
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