User guide

B-1
B
Connector and Pin
Assignments
B
Table B-1 lists the pin assignments for the DA15 network interface
connector.
Table B-2 describes DATA port signals from the Solo E1 DSU to the
equipment.
Table B-1 Network Interface Pin Assignments
Pin Signal
1 Send toward Network Tip (T1)
9 Send toward Network Ring (R1)
2 Frame Ground
3 Receive from Network Tip (T)
11 Receive from Network Ring (R)
4 Frame Ground
5, 6, 7, 8, 10,
12,13,14,15
N/C
Table B-2 DATA Port Signals—Solo E1 DSU to Equipment
Name V.35 EIA-530 X.21 RS-449 Description
Serial Clock
Transmit
SCT-A, B
(Y,AA)
SCT-A, B
(15, 12)
SCT -A, B
(15,23)
Clock for SD. SD
changes on positive
transition of SCT (A) -
SCT(B
)
Serial Clock
Receive
SCR-A
SCR-B
(V, X)
SCR-A
SCR-B
(17,9)
Signal Element
Timing (6,13)
RT -A, B
(8,26)
Clock for RD. RD
changes on positive
transition of SCT (A) -
SCT(B)
Receive Data RD-A
RD-B
(R,T)
RD-A
RD-B
(3,16)
Receive
(4,11)
RD -A, B
(6,24)
Received data from
the DCE
Data Set Ready
or Data Mode
DSR
(E)
DCE RDY-
A, B (6,22)
DM-A, B
(11,29)
Described in Table B-4
Receive Line
Signal Detect
RLSD
(F)
RLSD-A, B
(8, 10)
Indication
(5,12)
RR-A, B
(13,31)
Described in Table B-4