3-6
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Interconnect Signals
3
PIN
SIGNAL
NUMBER
C26
DTR4
DATA TERMINAL READY (Serial Port 4) - a signal
from the terminal to the modem indicating that the
terminal is ready to send or receive data.
C27-C30
GND
GROUND
C31
CTS2
CLEAR TO SEND (Serial Port 2) - CTS is a function
supplied to the terminal by the modem, and indicates
that it is permissible to begin transmission of a
message. When using a modem, CTS follows the off-
to-on transition of RTS after a time delay.
C32
DCD2
DATA CARRIER DETECT (Serial Port 2) - sent by
the modem to the terminal to indicate that a valid
carrier is being received.
Table 3-2. Connector J2 interconnect signals (Continued)
Pin
Number
Signal
Mnemonic
Signal Name and Description
