G.703 Connectors; Balanced G.703 (Db-9F); Table 3-3. Balanced G.703 Connector Pinouts - Comtech EF Data CDM-425 Installation And Operation Manual

3.2.2.2

G.703 Connectors

3.2.2.2.1

Balanced G.703 (DB-9F)

(R>L)
Pin #
5
9
4
8
3
7
2
6
1
Rear Panel Connectors and Pinouts
The Balanced G.703 connector is a 9-pin Type 'D' female connector. It is
used for single port G.703, D&I or D&I++. When used with Quad E1
operations, this connector serves Ports 1 and 2 of the Quad E1 interface.

Table 3-3. Balanced G.703 Connector Pinouts

Signal Function
Serial G.703
Tx in (+)
Tx in (-)
–
–
GND
–
–
Rx Out (+)
Rx Out (–)
CDM-425 Advanced Satellite Modem
Signal Function
D&I or D&I++
DDI (+)
DDI (–)
DDO (–)
DDO (+)
GND
IDI (+)
IDI (–)
IDO (+)
IDO (–)
3–8
Revision 0
Signal Function
Quad D&I
Port 1 Tx In (+)
Port 1 Tx In (–)
Port 1 Rx Out (–)
Port 1 Rx Out (+)
GND
Port 2 Tx In (+)
Port 2 Tx In (–)
Port 2 Rx Out (+)
Port 2 Rx Out (–)
MN-CDM-425