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12
C
2: I
HAPTER
NSTALLATION
Data Port
Connections
The NMS address, port rate, and power
up configuration mode may be set by
either configuration switches or
through software control. The physical
connection is 6-pin modular connector
with the pinouts for these connectors
shown in Table 2-16. This port is a
serial RS-232 DCE port configured for
eight bits, no parity, and one stop bit.
Both models of the
Verilink 1051 chassis
provide connection to the
customer equipment. Each
slot of the 1051-2 has a
corresponding DTE 8-pin
RJ-48 connector and a
high-speed DTE female
25-pin connector located
on the chassis rear panel.
The 1051-3 chassis is
similar except that it has a
high-speed DTE 34-pin
connector instead of the
25-pin connector. The
pinout for the DTE RJ-48
connector is given in
Table 2-17 and the pinout
for the high-speed DTE
connectors is given in
Table 2-18.
FCC rules require that interconnecting cables carrying high-speed data be shielded
appropriately to minimize radio frequency interference.
Table 2-16
Pin NMS Bus IN
1
Not Used
2
Signal Ground
3
Data Out
4
Data In
5
Signal Ground
6
Not Used
Table 2-17
DTE RJ-48 Pinout
Pin
Signal
1
Data Out
2
Data Out
3
Not Used
4
Data In
5
Data In
6
Not Used
7, 8
Chassis Ground
Table 2-18
High-Speed DTE Connector Pinout
ITU/EIA
Circuit
Common Name
101/AA
Frame Ground
102/AB
Signal Ground
103/BA (A) Transmit Data A
103/BA (B) Transmit Data B
104/BB (A) Receive Data A
104/BB (B) Receive Data B
105/CA
Request to Send
106/CB
Clear to Send
107/CC
Data Set Ready
108/CD
Data Term Ready
109/CF
Data Carrier
Detect
114/DB (A) Transmit Clock A 15
114/DB (B) Transmit Clock B
115/DD (A) Receive Clock A
115/DD (B) Receive Clock B
113/DA (A) External Clock A
113/DA (B) External Clock B
141/LLB
Local Loopback
140/RLB
Remote Loopback 21
142/TM
Test Mode
NMS Port Connector Pinouts
NMS Bus OUT
Not Used
Signal Ground
Data Out
Not Used
Signal Ground
Not Used
DB-25
V.35
25-pin
34-pin
DCE
1
A
Gnd
7
B
Gnd
2
P
In
14
S
In
3
R
Out
16
T
Out
4
C
In
5
D
Out
6
E
Out
20
H
In
8
F
Out
Y
Out
12
AA
Out
17
V
Out
9
X
Out
24
U
In
11
W
In
18
J
In
BB
In
25
K
Out
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