Northern UTA220/UTA220k - 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)