Alcatel-Lucent OmniAccess 780 - DB-15 Connector; USP Card X.21 Cable Pin-Out

Pin Connector Details for OmniAccess 780
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Alcatel-Lucent
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OmniAccess 780 Hardware Users Guide
USP CARD X.21 CABLE PIN-OUT DETAILS
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 -