1.4
SNM15
Introduction
Digicom SpA
Cont. Circuit
Direction Mnem. Description
Conn. V.24 RS 232 DTE-SNM15Abbrev.
2
103
BA ————>
TD Transmit data
3
104
BB <————
RD Receive data
4
105
CA ————>
RTS Request to transmit
5
106
CB <————>
CTS Clear to transmit
6
107
CC <————
DSR Modem ready
7
102
AB <————>
SG Signal ground
8
109
CF
<————
DCD Data carrier detect
9
-
-
<————
+12 V test voltage
10
-
-
<————
-12 V test voltage
11
-
-
12
-
-
13
-
-
14
-
-
15
114
DB <————
TC Internal transmission
clock
16
-
-
17
115
DD <————
RC Reception clock
18
141
CN ————>
L3 Request for loop 3
19
CCONF pin (see *M
command)
20
108.2 CD ————>
DTR Data terminal ready
21
140
CF
————>
RDL Request for remote Loop
22
125
CE
<————
RI Ring Indication
23
112
CI
<————
Speed section for DCE
(Note 1)
24
113
DA ————>
ETC External transmission
clock
25
142
-
<————
TI Active loop
Interface circuits
