RS-366接口定义
RS-366接口定义
公头
母头
Pin
信号名称
功能描述
Circuit EIA
1
N.C(悬空不用)
2
Digit Present
A signal given to the ACE indicating that the digit lines contain a digit
DPR
3
Abandon Call and Retry
An indicator signal from the ACE that it could not make a connection. Could be "busy".
ACR
4
Call Request
A signal from the DTE that tells the ACE to go "off hook"
CRQ
5
Present Next Digit
A signal from the ACE to the DTE to indicate that the ACE is ready to receive the next digit.
PND
6
N.C(悬空不用)
7
N.C(悬空不用)
8
N.C(悬空不用)
9
N.C(悬空不用)
10
N.C(悬空不用)
11
N.C(悬空不用)
12
N.C(悬空不用)
13
Distant Station Connected
Indicator from ACE to DTE that the call is succesfully made.
DSC
14-17
Digit Signal Circuits
Four lines containing a parallel BCD dial digit (10 digits, plus control digits)
NB1-NB8
18
N.C(悬空不用)
19
N.C(悬空不用)
20
N.C(悬空不用)
21
N.C(悬空不用)
22
Data Line Occupied
An indicator that is used by the ACE to let the DTE know that the line it wants to use is used by another device.
DLO
23
N.C(悬空不用)
24
N.C(悬空不用)
25
N.C(悬空不用)
