Table 7-7: Csu Signals; Table 7-8: Csu Messages - PictureTel Concorde 4500 Administrator's Manual

OBTAINING DIAGNOSTIC INFORMATION
7-14
The following table describes the CSU signals.

Table 7-7: CSU Signals

SIgnal
CTS Clear to send
DTR Data terminal ready
RR Receive ready
RTS Request to send
The following table describes the CSU messages.

Table 7-8: CSU Messages

Message
Command
Prompt
Offline
Online
Line loopback
Remote line test
Network loopback
No network signal
Out of Svc/Frame
Description
a
Description
Normal messages indicating that the channel
is valid
Normal messages indicating that the far-end
site has initiated a test
A normal message indicating that the network
is performing a test
An error message indicating one of the
following:
The network cable is not connected
properly between the network wall socket
and the PSDN socket on the back of the
electronics module.
The digital phone lines are not functioning
properly.
An error message indicating that the network
is temporarily out of service