Cabletron Systems 1800 - page 102

8-10 Smart Switch 1800 4. 0 User Guide , Rev 0 1
Incoming Calls Barred
is an X.25 facility that prevents transmission of incoming calls to this port.
Outgoing Calls Barred
is an X.25 fa cility that prevents transmission of outgoing calls fr om this port.
Mask L in k Alar ms
prevents (if enabled) transmission to the collecting node of the link alarms 400-406
(Link Ena bled, Li nk Disable d, etc.)
Maximum Packet Size
is the maximum data packet size that will be allowed to pass through this port. A
packet size included in a call setu p packet will be used, as long as it is smaller than the
maximu m sp ecifi ed h ere.
Defau lt Pa cket Size
will be assigned to an incoming call setup packet if the packet does not request a
packet size.
Maximum Window Size
is the maximum number of unackno wledged p acket s per logical chan nel that can pass
through the port.
Default Window S ize
will be assigned to an incoming call setup packet if the packet does not request a
window s i z e.
Maximum Throughput Class
specifies the default throughput class that will be inserted into a Call Request packet
if Throughput Class Negotiation is not enabled or if a thr oughput class is not requested
in the Call Request. This value should not be higher than the line speed specified for
the physical port. Valid values (in bits per second) are:
75 150 300 600 1200 2400
4800 9600 19.2K 48K 64K
Default Calling Address
will be inserted into to an incoming Call Request packet i f the packet does not contain
a calling address.
T20 Restart Timer
will be started when th e port issues a Rest art Request, and stopped ( and reset) when a
Restart Confirmation or Restart Indication is received. If the timer expires, the port
will retransmit the Restart Request.
T21 Incoming Call Timer
will be started when the port issues a Call Request packet, and stopped (and reset)
when a Call Connected, Clear Indication, or Incoming Call is received. If the timer
expires, the port will send a Clear Request.
T22 Reset Timer
will be started when the port issues a Reset Request, and stopped (and reset) when a
Reset Confirmation or Reset Indication is received. If the timer expires, the port will
retransmit the Reset Request.