L-3 Communications CEU, User Manual

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Remote Control Operations STE User’s Manual
8-4 Rel. 2.6
When the STE is at default settings, Remote Control is disabled and Remote Authentication is enabled.
Therefore, when the TPA sets Remote Control to enabled, the Remote Authentication should
automatically be enabled. This must be verified during set up.
Remote Authentication is only active when Remote Control mode is enabled (Terminal Control is set to
“Terminal Under Host Port Control”). The STE-Rs act as though Remote Authentication is enabled
regardless of this setting.
8-4.2 Remote Control States
When the STE is in the Remote Control mode, it can be in any one of the following states:
•
Command State (asynchronous)
•
Connecting State (call setup)
•
Asynchronous On-line State (asynchronous data transfer)
•
Synchronous On-line State (synchronous data transfer)
•
Voice On-line State
The following paragraphs describe how your STE is capable of transitioning to/from each state and
provides an overview of the capabilities within each state.
8-4.2.1 Command State
When the STE is set to Remote Control and the terminal is on-hook, the STE is ready to answer calls and
to accept any of the valid AT Commands described in Paragraph
8-5.2 .
The STE will also accept commands under the following circumstances:
•
Following receipt of the escape code when transferring asynchronous data or voice
•
Following the DTR Escape signal at the host port interface when transferring synchronous or
asynchronous data or voice
•
Following call failure when connecting to a far-end terminal
•
When a call is disconnected
Remote Control commands and responses are transmitted between the STE and a DTE asynchronously
at 38.4 or 115.2 kbps as determined by the local mode menu setting.
8-4.2.2 Connecting State
The STE will attempt to connect to a far-end terminal following receipt of a dial command via RED
SERIAL DATA PORT 1 or when answering an incoming call. The information returned to the control
device by the STE during the connection process is controlled by the configuration that you have
established via AT commands prior to the call establishment. If the connection process fails to properly
set-up the call, the call will be terminated and the STE will return to the Command State.
8-4.2.3 On-Line States
When the STE has connected to a far-end terminal, it is capable of transmitting and receiving
asynchronous or synchronous data or voice (STE-R). When communication is terminated (as previously
described), the STE will return to the Command State. It is also possible to temporarily enter the
Command State without terminating the call via the escape code or DTR Escape signal.
8-4.2.4 Display Messages
Use your STE to control the types and formats of the response messages sent from the STE to the DTE
(connected control device/computer). Use one or more of the Configuration AT commands listed in
Table
8-2 to execute this control. The short form and the verbose form of these response messages are listed
in Table 8-3 .