Nondialed Call Setup With Auto Answering; Call Setup With Manual Answering; V.35, Rs-449, And Switched-56 Call Disconnect - PictureTel Concorde 4500 Servicing Manual

Nondialed Call Setup with Auto Answering

Call Setup with
Manual
Answering
V.35, RS-449, and
Switched-56 Call
Disconnect
The RS and TR signals are always asserted when the Concorde¥4500
is in PictureTel Ready mode and is set for a nondialed modem in
Auto Answer mode.
When the TA detects the data signals from the network, it passes
them to the Concorde¥4500 and the call is complete.
The Request to Send (RTS) signal is always asserted when the
Concorde¥4500 is set for a dialed modem in Manual Answer mode.
As soon as the CSU detects the ring signal from the network, it
asserts the RI (ITU-T V.35) or IC (EIA RS-449) signal to the Concorde
4500.
The Concorde¥4500 rings a bell or buzzer. The Concorde¥4500 also
sends the
Incoming call
are enabled.
When the user answers the call (by pressing the
Concorde¥4500 asserts the TR signal and then waits for the RR and
CTS signals from the CSU.
When the Concorde¥4500 detects that the RR and CTS signals are
asserted, the call is complete.
The call disconnect process begins when someone terminates a
videoconference by pressing a
on the keypad. The videoconferencing systems exchange
information indicating that the call is being disconnected. The
monitor displays the message
For nondialed calls, the videoconferencing systems stop
exchanging data, deassert the RS signal, and disconnect the
call.
For dialed calls, the disconnect process proceeds at the hardware
level. The protocol used for disconnecting depends on whether
the call was disconnected from the near end or the far end.

Call Setup with Manual Answering

message to the monitor if on-screen messages
button (or similar button)
HANG UP
Call disconnected: near end / far end
button), the
Call/Add
.
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