ATL Telecom AM64/512 - Manual (Page 22)

V.35 (MRAC ) Con nec tor Pin Al lo ca tion
Pin Type SITS
Unbal A Wire B wire Cir cuit De scrip tion 89/43
B 102 Com mon Re turn Com mon
P S 103 Trans mitted Data Load
R T 104 Re ceived Data Generato r
C 105 Re quest to Send Load
D 106 Ready for Sending Gen er a tor
E 107 Data Set Ready Gen er a tor
F 109 Data Chan nel Re ceived Gen er a tor
U W 113 Ex ter nal Trans mit ter Sig nal El e ment Tim ing Load
Y AA* 114 Trans mit ter Sig nal El e ment Tim ing Gen er a tor
V X 115 Re ceiver Sig nal El e ment Tim ing Gen er a tor
N 140 Re mote Loopback Load
L 141 Lo cal Loopback Load
NN* 142 Test In di ca tor Gen er a tor
Note that on some MRAC con nec tors pin `AA' is marked as `a' and pin `NN' is marked `m'.
37 Way D-type V.36 Con nec tor pin al lo ca tion
Pin Type SITS
Unbal A Wire B wire Cir cuit De scrip tion 89/43
19, 20, 27, 29, 31 102 Com mon Re turn Com mon
4 22 103 Trans mitted Data Load
6 24 104 Re ceived Data Gen er a tor
7 25 105* Re quest to Send Load
9 (9) (27) 106* Ready for Sending Gen er a tor
11 (11) (29) 107* Data Set Ready Gen er a tor
13 (13) (31) 109* Data Chan nel Re ceived Gen er a tor
17 35 113 Ex ter nal Trans mit ter Sig nal El e ment Tim ing Load
5 23 114 Trans mit ter Sig nal El e ment Tim ing Gen er a tor
8 26 115 Re ceiver Sig nal El e ment Tim ing Gen er a tor
14 140 Re mote Loopback Load
10 141 Lo cal Loopback Load
18 142 Test In di ca tor Generator
* Stan dards in di cate that the con trol cir cuits 105, 106, 107, 109 may be im ple mented as bal anced cir cuits
(us ing both A and B wires) or un bal anced sin gle ended cir cuits. In the case of the con trol cir cuits the A wire is
to be used and the B wire is to be joined to GND (cir cuit 102) at the re ceiver end of the cir cuit.
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