Paradyne COMSPHERE 3800 Series Modems 3810 Manual de usuario Pagina 176

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COMSPHERE 3800 Series Modems
E-2 November 1996 3810-A2-GB30-20
Table E-1
EIA-232-D Pin Assignments
RS-232
Pin
Name
EIA
Circuit
CCITT
Signal
Source
Circuit Function
1 AA 101 Shield
2 TXD BA 103 DTE Transmit Data
3 RXD BB 104 DCE Receive Data
4 RTS CA 105 DTE Request-to-Send
5 CTS CB 106 DCE Clear-to-Send
6 DSR CC 107 DCE Data Set Ready
7 SG AB 102 Signal Ground
8 LSD CF 109 DCE Line Signal Detect
9 +10V Reserved for test purposes (may be used to drive one RS-232
load)
10 –10V Reserved for test purposes (may be used to drive one RS-232
load)
11 Unassigned
12 CT112 CI 112 DCE Data Signal Rate Select
13 Reserved for future function
14 Reserved for future function
15 TXC DB 114 DCE Transmit Clock
16 Reserved for future function
17 RXC DD 115 DCE Receive Clock
18 CT141 LL 141 DTE Local Loopback
20 DTR CD 108 DTE Data Terminal Ready
21 CT140 RL 140 DTE Remote Loopback
22 RI CE 125 DCE Ring Indicator
23 CT111 CH 111 DTE Data Rate Selector
24 XTXC DA 113 DTE External Clock
25 TEST TM 142 DCE Test Mode
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