Paradyne CSU - Manual (Page 426)

E. Connectors, Cables, and Pin Assignments
E-4 September 2002 9128-A2-GB20-80
COM Port Connector
The type of COM port connector depends on the model.
COM Port for 9126 and 9128-II (25-Position)
The following table provides the pin assignments for the FrameSaver SLV 9126
and 9128-II units’ 25-position EIA-232C communication port connector.
COM Port for 9126-II (9-Position)
The following table provides the pin assignments for the 1-slot FrameSaver
SLV 9126-II’s 9-position EIA-232C communication port connector.
Signal Direction Pin #
Shield (GND) — 1
DCE Transmit Data (TXD) From DTE ( In ) 2
DCE Receive Data ( RXD) To DTE ( Out) 3
DCE Request to Send ( RTS) From DTE ( In ) 4
DCE Clear to Send (CTS) To DTE (Out ) 5 *
DCE Data Set Ready (DSR) From DTE ( In ) 6*
Signal Ground ( SG) — 7
DCE Carrier Detect ( CD) To DTE ( Out) 8*
DCE Data Terminal Ready (DTR) From DTE ( In ) 20
* Pins 5, 6, and 8 are tied together.
Pin # Signal Direction
1* Data Carrier Detect (D CD) To DTE ( Out)
2 Receive Data (RD) To DTE ( Out)
3 Transmit Data ( TD) From DTE (In )
4 Data Terminal Ready (DTR) From DTE ( In )
5 Signal Ground (GND) —
6* Data Set Ready ( DSR) To DTE ( Out)
7 Not used —
8* Clear To Send (CTS) To DTE ( Out)
9 Not used —
*Pins 1, 6, and 8 are tied together.