Dialing operations 425
Wire test mode
The DAC allows forthe EIA signaling leads to be tested to facilitate
installation and troubleshooting. This feature can be invoked through the
service change downloaded parameters, or by setting the appropriate front
panel switch. Wire test mode only operates when the port is idle. The leads
are cycled ON and OFF in 0.5 second periods (ON for 0.5 seconds, OFF for
0.5 seconds) for the number of cycles shown in Table178 "Wire test signal
leads cycle counts" (page 425). The lead status can be monitored by the
front panel LEDs. The test is run indefinitely until the front panel switch is
turned off, and the software wire testparameters are disabled.
Note: Forthe most accurate results, be sure no equipment is connected
to the EIA leads.
Table178
Wire test signal leads cycle counts
Cycle count
Label EIA Signal Lead
description Pin RS-232-C RS-422
TxD Transmit 211
RxD Receive 322
CTS Clear To Send 53—
DSR Data Set Ready 64
—
DCD Carrier Detect 85—
DTR Data Terminal Ready 20 6 —
RI Ring Indicator 22 7—
Note: The CTS signal is not included in the faceplate LED. Therefore, a
1.5-second delay occurs between the RxD lamp going on, and the DSR lamp
going on.
Independent storage of dialing parameters
Twodialing parameters, DCD control, and Answer mode, can be modified
by both keyboard and Hayesdialing commands.
The Hayes dialing mode also allows the user to modify the Input echo
control, and Prompt/Result codes transmit control. With keyboard dialing,
the Input echo control and Prompt/Response codes control are determined
by the downloaded parameters. They cannot be altered through dialing
commands.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23May 2008
Copyright© 2003-2008, Nor tel Networks
.