Cabletron Systems 1800 - Manual (Page 102)

8-10 SmartSwitch 1800 4. 0 User G uide, Rev 01
Incoming Calls Barred
is an X.25 facility that prevents transmission of incoming calls to this port.
Outgoing Calls Barred
is an X.25 facility that prevents transmission of outgoing calls from this port.
Mask Link Alarms
prevents (if enabled) transmission to the collecting node of the link alarms 400-406
(
Link Enabled, Link Disabled , 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 setup packet will be used, as long as it is smaller than the
maximum specified here.
Default Packet 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 unacknowledged packets per logical channel that can pass
through the port.
Default Window Size
will be assigned to an incoming call setup packet if the packet does not request a
window size.
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 throughput 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 if the packet does not contain
a calling address.
T20 Restart Timer
will be started when the port issues a Restart 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.