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RTU-292 Operations Manual
5.5 CALL PROGRESS RESPONSES FROM THE RTU-292
The following section describes the responses the user may expect from the RTU-292 when
Call Progress is active. Call progress is active whenever the PSTN is “off-hook”.
Table 5-3 Call Progress Responses
%CP_RING Exx <CR>
Call Progress detects Ringback.
%CP_BUSY Exx <CR>
Call Progress detects a Busy signal.
%CP_NO_ANS Exx <CR>
No answer after the DIAL command originated a call.
%CP_NO_DIALTONE Exx <CR>
No dialtone when the DIAL command originated a call.
%CP_AUTO_ANSWERED Exx <CR>. The RTU-292 has answered an incoming PSTN call
5.6 RESPONSE ERROR CODES
All responses from the RTU-292 include an error code. This error code allows the user to see
if there were any problems with a given command. Unless otherwise noted the user may
assume that a non-zero error code indicates that the command was not acted upon.
Table 5-4 Response Error Codes
E0
No error.
E1
The previous command is unknown.
E2
The previous command was missing required parameter(s).
E3
The previous command had a parameter, which was out of the allowed range for this command.
E4
The previous command requested a resource, which is not available. An example of this would
be a DIAL command sent to the Local Phone option, when the Local Phone option is not
installed.
E5
The previous command requested a resource, which is currently busy. An example of this would
be a DIAL command received when the RTU-292 is already off hook.
E6
The previous command may not be used at this time. An example of this would be a DTMF
command received when the RTU-292 is still on-hook.
E7
A hardware related fault was detected.
JPS Communications, Inc.
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