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Introduction
1-53920-A2-GN31-30 November 1996
FACEPLATE
496-14178a-04
EIA232/V.24
EDGE CARD
CONNECTOR
FUTURE
USE
BACK
CONNECTOR
PLATE
V.35
(3600/3500)
RS366A/V.25
(3800)
EIA232/V.24
TXD
RXD
RTS
CTS
DSR
DTR
LSD
103
104
105
106
107
108
109
Pwr
Alrm
Test
Dial
RI
Busy
Serv
SQ
Status
Front Panel
3921
Plus
142
125
Spkr
EIA232/V.24
CONNECTOR
FUTURE
USE
GROUNDING
TAB
Figure 1-2. Model 3921
Plus
Singleport Modem