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Pin Connector Details for OmniAccess 780
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Alcatel-Lucent
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OmniAccess 780 Hardware Users Guide
USP C
ARD
X.21 C
ABLE
P
IN
-
OUT
D
ETAILS
The following table lists the X.21 cable pin out at the DB-15 connector:
Table 7: USP Card X.21 Cable Pin-out
Note:
1. Signal type V.11 is differential.
2. DB-15 male connector is used on X.21 DTE cable and DB-15 female connector is
used on X.21 DCE cable.
Signal Name
Signal Type
(Note 1)
X.21
Mnemonic
DB-15 connector
pin # (Note 2)
Direction
Transmit(A)
V.11
T(A)
2
DTE -> DCE
Transmit(B)
V.11
T(B)
9
DTE -> DCE
Byte Timing(A)
V.11
113
7
DCE -> DTE
Byte Timing(B)
V.11
113
14
DCE -> DTE
Signal Timing(A)
V.11
S(A)
6
DCE -> DTE
Signal Timing(B)
V.11
S(B)
13
DCE -> DTE
Receive(A)
V.11
R(A)
4
DCE -> DTE
Receive(B)
V.11
R(B)
11
DCE -> DTE
Control(A)
V.11
C(A)
3
DTE -> DCE
Control(B)
V.11
C(B)
10
DTE -> DCE
Indication(A)
V.11
I(A)
5
DCE -> DTE
Indication(B)
V.11
I(B)
12
DCE -> DTE
Signal Ground
-
-
8
-
Shield
-
-
1
-