Verilink 9000 Series (34-00271) Product Manual - Manual (Page 119)

Configuration / Operation 97
Turnaround Delay
The Turnaround Delay is the time, in milliseconds, the unit waits between the receipt
of a message and the transmission of the response. If the connected device seems to
be missing messages because they are coming back too quickly, increase this value.
Use a value of 10 for sync lines, and a value of 0 for async and TDI. On the
TXPORT 9000 series, a value of 10 is needed for Unisys PWT270s for TDI.
The values for this parameter are in 10-millisecond increments. A value that is not
a factor of 10 rounds down to the nearest 10-millisecond factor.
Example: A value of 15 rounds down to 10 milliseconds.
The selections are 0 to 2550, 10.
RTS/CTS Control
This parameter controls the RTS (request to send) and CTS (clear to send)
signaling as shown in Table 5-4. The DTE/DCE setting of the port determines
which lead is affected by this parameter.
Messages per Group Poll
The value in this field determines the number of messages that may be sent to the
host after a group poll has been received. Most front end processors (FEPs) cannot
receive multiple messages in response to one group poll. However, if the connected
FEP does support this feature, the value of this field may be set to match the FEP.
The selections are 1 to 255.
Offline Timeout
This is the time, in seconds, that can elapse with no activity from the host before the
TXPORT device declares this port off-line. Once the port is declared off-line, a
Disconnect Request is issued for each station connected to this host. If the station is
connected via a X.25 link, a Clear Request is issued on that LCN. The selections are
0 to 255, 90.
Table 5-4 RTS/CTS Control Parameters
Setting DTE DCE
O (on) RTS is always on. CTS is always on.
D (dynamic) RTS is on during data transmit. CTS is on in response to RTS.
F (floating)* RTS is not used. CTS is not used.
* When using the TDI, floating is required.