6100 BSC Programming Manual

Writing Applications that Use 6100 BSC
CONNECT. The CONTROL CONNECT request explicitly connects the
line. It raises DTR and may or may not wait for DSR, depending
on the value in the modifier field. If it waits for DSR, the
value of BSCCONNECTTO (a line parameter) determines the
interval.
This request makes sense only when the line is in DISCONNECTED
state. When the request completes, the state is CIRCUIT
ASSURANCE if ID exchange will ensue; otherwise, the state is
CONTROL. If you never issue CONTROL CONNECT, BSC connects the
line on the first READ, WRITE, or WRITEREAD request.
The request buffer format is:
Function := 67
Modifier := 0 means raise DTR and wait for DSR.
2 means raise DTR and complete the request.
Request ID := A unique value from 1 to 32767,
application-determined
Text Out := Doesn't matter
Text In := Doesn't matter
Text := None
The response buffer format is:
Response := 67
Status := 0 if the operation succeeded, otherwise
a code for the error that occurred
Request ID := The same as in the request
Detail := A status detail code, containing more
description of request status
Text In := 0
Text := None
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