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CRS-150 1:1 Redundancy Switch
Connector Pinouts
3.2.2.3
Connector, DB-9F
Audio
3.2.2.4
G.703 Connectors
3.2.2.4.1 Balanced G.703 Interface Connector, DB-15F
The 9-pin 'D' Type female (DB-9F) Audio connector is used for the two 32
kbps ADPCM audio inputs and outputs (600Ω transformer coupled, balanced
signals). These can be used for both ESC voice circuits in IDR mode, or as the
primary data (FAST option).
Audio Connector (DB-9F)
Pin #
Signal Function
1
Tx Audio 1 (+)
6
Tx Audio 1 (-)
2
Rx Audio 1 (+)
7
Rx Audio 1 (-)
8
Tx Audio 2 (+)
4
Tx Audio 2 (-)
9
Rx Audio 2 (+)
5
Rx Audio 2 (-)
3
Common
The 15-pin 'D' Type female (DB-15F) P7 Balanced G.703 connection is used
for balanced operation at the G.703 data rates of T1 (1.544 Mbps), E1 (2.048
Mbps), or T2 (6.312 Mbps).
Balanced G.703 Connector (DB-15F)
Pin #
Signal Function
1*
Drop Data Input ( - )
9*
Drop Data Input (+)
2
Ground
10
Not Used
3*
Insert Data Output ( - )
11*
Insert Data Output (+)
4
Ground
12
Drop Data Output ( - )
5
Drop Data Output (+)
13
Insert Data Input ( - )
6
Insert Data Input (+)
14
Not Used
7
Not Used
15
Not Used
8
Not Used
*Use for all non-Drop and Insert and T2/E2 balanced applications.
Direction
In
In
Out
Out
In
In
Out
Out
Name
DDI–
DDI+
GND
IDO–
IDO+
GND
DDO–
DDO+
IDI–
IDI+
3–6
Revision 2
MN/CRS150.IOM
Direction
In
In
Out
Out
Out
Out
In
In
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