Northern UTA220/UTA220k User Manual
Page 152
D-4
UTA220/UTA220k
Interfaces
Table D-4:
Ports 3 and 4 Pin Functions
DB-
25 Pin
EIA-232/V.24 Mode
EIA-366 Mode
EIA-
232E
Pin
V.24
Pin
Function
EIA-
366
Pin
Function
1
AA
101
Frame Ground
(FG)
Shield
Frame Ground
2
BA
103
Transmitted Data
to UTA (TC)
DPR
Digit Present
3
BB
104
Received Data
from UTA (RD)
ACR
Abandon Call and
Retry
4
CA/CJ
105
Request to Send
(RTS)
CRQ
Call Request
5
CB
106
Clear to Send
(CTS)
PND
Present Next Digit
6
CC
107
Data Set Ready
(DSR)
PWI
Power Indication
7
AB
102
Signal Ground
(SG or GND)
SG
Signal Ground
8
CF
109
Data Carrier Detect
(CD or DCD)
-
(Not Used)
9
(Re-
served)
+
(Not Connected)
-
(Not Connected)
10
(Re-
served)
+
(Not Connected)
-
(Not Connected)
11
-
126
(Not Connected)
-
(Not Connected)
12
SCF/CI
122/
112
(Not Connected)
-
(Not Connected)
13
SCB
121
(Not Used)
DSC
Distant Station
Connected
14
SBA
118
(Not Used)
NB1
Digit Lead 1
15
DB
114
(Not Used)
NB2
Digit Lead 2
16
SBB
119
(Not Used)
NB4
Digit Lead 3
17
DD
115
(Not Used)
NB8
Digit Lead 4
18
LL
141
Local Loopback
-
DO NOT USE
19
SCA
120
(Not Connected)
-
(Not Connected)