Rs-232 Cable Pin Connections - Lucent Technologies DEFINITY Administrator's Manual

Installation
Figure 3-4. RS-232 Cable Pin Connections
NOTE:
The DEFINITY Extender modules use the CTS lead for flow
control. When the internal buffer is 32 characters from full, the CTS
lead is turned off. While CTS is off, up to an additional 32
characters can be transmitted without any loss of data. If hardware
flow control is not enabled or if a cable without the CTS lead is
used, characters will be lost when this buffer overflows.
The DEFINITY Extender modules use the DCD lead to indicate
whether or not the modules have made a connection. When this
lead is on, the modules have made connection.
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Issue 3 July 1997