User manual

Chapter 3. Operation
61200773L1-1A ATLAS 800 Series Video Module User Manual 33
DTR
Selects the response to DTR transitions. The following table lists the configuration
options for the DTR parameter with respect to the current configuration for the
module in the Dial Plan.
0 I
NH
When the port detects an uninterrupted string of 0s being transmitted for more than
one second, setting this parameter to ON
will cause the ATLAS 800 Series to send
1s toward the network.
T
EST
These options initiate different types of tests and display test results.
LOOPBACK
The Dual Video Module supports both local and remote loopbacks. Selecting
L
OCAL
L
OOPBACK
or R
EMOTE
L
OOPBACK
initiates the appropriate loopback
sequence.
N
O
L
OOPBACK
No active loopback
L
OCAL
L
OOPBACK
Activates both a local loopback (back toward the DTE) and a port loopback
(toward the network)
R
EMOTE
L
OOPBACK
Initiates a local loopback request sent to the remote Dual Video Module. This
allows for end-to-end circuit test.
Table 3-1. DTR Descriptions
Dial Method (Dial Plan)
DTR
Setting
Description
DIAL
ON
DTR
Recognize
DTR
Call is dialed when DTR is high and dis-
connects when DTR goes low.
Ignore DTR Call will never connect.
RS-366
Recognize
DTR
Call is dialed if DTR is already high and
disconnected when DTR goes low.
Ignore DTR Call is dialed regardless of DTR state and
must be disconnected manually.
M
ANUAL
Recognize
DTR
Call is dialed if DTR is already high and
disconnected when DTR goes low.
Ignore DTR Call is dialed regardless of DTR state and
must be disconnected manually.
The R
EMOTE
L
OOPBACK
option is only supported for Dual Video
Module to Dual Video Module applications.