Cabletron Systems 1800 - Manual (Page 161)

Configuring BSC Interact ive 10-5
1 If the TPAD is connecting to a logical X.25 port in the SmartSwitch, Atcl must be Y .
Explanations of Port Parameters
Port Type
specifies the protocol the port will support. Selecting this parameter will display a list
of all serial protocols loaded in the device.
Physical Port Interface
must be configured as follows. For reference, port locations are shown on page 6-1 .
●
Port 0 is always RS-232 .
●
Port 1 must be RS-232 if the port is being configured for BSC.
●
Ports 2 and 3 are determined by the attached cables: RS-232 , V.35 , or RS-449 .
Blocked Port Flag
will cause the port to be enabled ( N ) or disabled ( Y ) at node IPL. The port will remain
in that state until this parameter is changed or an on-line enable ( [B], [B], [C] from the
Main Menu) or disable ( [B], [B], [A] from the Main Menu) is performed.
Line Speed
is the data transmission rate in bits per second, and the clock speed on a serial port
when the port is a physical DCE (i.e., the attached I/O cable is DCE). If this port is a
physical DTE, specify the line speed that matches (as closely as possible) that of the
device connected directly to the port.
Retransmission Period
is the length of time before the node will transmit an I-frame if the previous trans-
mission is not acknowledged. If the period expires, the timer will be reset and a super-
visory frame will be transmitted demanding immediate acknowledgement. The
Maximum Retransmissions (see that entry) counter will also be incremented.
The default value of 2000 ms allows avoidance of unnecessary retransmission of
frames that have merely been delayed.
Table 10-2 BSC Interactive Port Subscriber Parameters
Parameter Valid Values Default Value
Sq (Sequence) 1–16 none
Local Sub 0–15 characters none
Remote Sub 0–15 characters none
Atcl (Autocall) Y/ N (used only on TPAD) 1 N
Rtytm (Retry Timer) (sec) 15–255 60
Rty # (Retry Number) 0–255 0 (indefinite)
Conn ID 00–ff none