User`s guide

6: BSC 2780/3780 Link Configuration Options
DC 900-1340I 181
report. If the signal returns before the delay time expires, the timer is reset and no report
is made.
To set this option using the DLI configuration file, use the dsrDelay parameter; for
example,
dsrDelay = 3. See Table 7–2 on page 191.
6.27 TTD/WACK Limit Option (31)
This option limits the number of consecutive TTDs and WACKs that can be received by
the ICP. If the remote station transmits consecutive WACKs equal in number to this
limit, the ICP resets the data link to idle mode, sends EOT or DLE EOT (depending on
the setting of the line type option in Section 6.31), and aborts the transmission with the
DLI_ICP_ERR_RETRY_EXCEEDED error. If the number of consecutive received TTDs exceeds
this limit, the ICP ceases responding to TTDs.
To set this option using the DLI configuration file, use the ttdLimit parameter; for exam-
ple,
ttdLimit = 0. See Table 7–2 on page 191.
6.28 Disconnect Timer Length Option (32)
This option specifies the disconnect timer length in seconds. The timer is started when
the BSC 2780/3780 software is in receive or idle mode (see Section 5.4.2.4 on page 142).
Any legal line activity resets the timer. The action taken when the timer expires depends
on the setting of the line type option (Section 6.31).
If the timer expires on a leased line in receive mode, the BSC 2780/3780 software sends
EOT on the line, changes to idle mode, and notifies the client with the
DLI_ICP_ERR_DISC_TIMEOUT error. No line action is taken if the timer expires in idle mode.
If the timer expires on a dial-up line in either receive or idle mode, the BSC 2780/3780
software sends DLE EOT on the line, sets the mode to idle, and notifies the client with
the
DLI_ICP_ERR_DISC_TIMEOUT error.