TECHNICAL: 0118 931 2233
V.35 Interface
When a V.35 type rear card is plugged in then the DTE interface is presented as V.35. The
connector pin out for the V.35 interface is given in the Appendix G. The V.35 interface is
presented on the 15-way D-type connector. Two “control flags” are available as outputs and
one “control flag” is available as an input. The V.35 specification calls for the following
signals;
V.35 CONTROL FLAG SIGNALS
Name
Description
Type at Connector
Signal number
RTS
Request To Send
Input
105
RFS
Ready For Sending
(CTS)
Output
106
DSR
Data Set ready
Output
107
DCD
Data Channel
Detector
Output
109
Control signals
The G-Converter 2048 supports one input flag and two output flags. RTS would normally be
the definition for Flag 1 I/P as this is the only I/P called up by the V.35 spec.
The two output flags, Flag 2 O/P and Flag 3 O/P can be assigned to RFS, DSR or DCD, the
choice is at the discretion of the user.
The connector pin out for the V.35 interface is given in appendix H and a suggested stub
cable converter to 34 pin MRAC is given in appendix I.
Configuration Of V.35 Control Flags
When the V.35 interface is selected the FLAG 1 O/P and FLAG 2 O/P can be individually
controlled. Four choices are available to the user.
Selection is made via Link settings, LK2 configures FLAG 1 O/P and LK1 configures FLAG
2 O/P. Refer to the location diagram in Appendix J
The position of LK1 and LK2 is shown below;
LK1 AND LK2 SETTINGS
Jumper position
O/P Flag function
C
Flag n O/P follows carrier
B
Flag n O/P on
A
Flag n O/P follows Flag 3 I/P
Not fitted
Flag n O/P off
11
G-Converter 2048 Channel Card