6100 MPS-B Programming Manual

6100 MPS-B LINK MANAGEMENT
CONTROL State
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| |
| Request Status Code Description New State |
| |
| CONTROL 0 Normal Completion CONTROL |
| (Send EOT) 140 Modem error DISCONNECT |
| 161 6100 error DISCONNECT |
| 190 6100 error DISCONNECT |
| |
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Figure 2-3. Completion Status to Leave CONTROL State
(Page 2 of 2)
Requests and Functions Applicable to CONTROL State
The following requests are permitted in CONTROL state. Some
requests have different functions when the line is in other
states. For complete descriptions of the requests, see
Section 3.
• FETCH CONFIGURATION, to retrieve line parameters. You can
find out the values of line parameters, but you aren’t allowed
to change them in this state. This request does not cause a
change of state.
• FETCH STATISTICS, to retrieve line quality and usage data.
This request does not cause a change of state.
• WRITE data, to send the first message. The line state when
this request completes successfully is SELECT-TEXT.
• READ data, to read the first message. The line state when
this request completes successfully is READ.
• WRITEREAD data, to send the first message and accept a
conversational reply. The line state when this request
completes with text is READ; the line state when this request
completes with an acknowledgement is SELECT-TEXT.
• CONTROL, to disrupt an operation in progress and change the
state to DISCONNECT, or to send an EOT sequence. If you use
this request to send an EOT, the line state does not change.
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