Cabletron Systems SmartSwitch 6000 User Manual page 108

Throughput Class Negotiation
Local Charging Prevention
Reverse Charge Acceptance
Fast Select Acceptance
Incoming Calls Barred
Outgoing Calls Barred
Maximum Packet Size
Default Packet Size
Maximum Window Size
6-26
is an optional X.25 facility that permits negotiation of the throughput classes for either
direction of data transmission on a per call basis. If
) will be used. If
Throughput Class
packet will be used. (If a class for either direction is not included, its default value will
be used.)
prevents calls (if ) from being charged to this port. Incoming calls from the network
Y
with Reverse Charging specified will be rejected; outgoing calls will have Reverse
Charging inserted if it is not already in the call packet.
authorizes transmission of incoming calls that request the X.25 Reverse Charging
facility. If is selected for this parameter and a call requests Reverse Charging, the
N
call will not be transmitted.
authorizes transmission of incoming calls that request the X.25 Fast Select facility.
is an X.25 facility that prevents transmission of incoming calls to this port.
is an X.25 facility that prevents transmission of outgoing calls from this port.
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.
will be assigned to an incoming call setup packet if the packet does not include a
packet size. A packet size of 512 bytes is imposed on all protocols except X.25
between the PAD port and the logical port. The
mission out the logical port. (X.25 traffic uses the
the X.25 port. Although a similar parameter exists on SNA ports, it is not used for
internal transmission.
Multiple packet sizes (e.g., for multipoint SDLC-to-QLLC) require either
multiple logical ports or the X.25 address translation function (described in
Chapter 7) (which allows modification of facilities in Call Request
packets).
is the maximum number of sequentially numbered I-frames that can be waiting for
acknowledgment by the (end-to-end) destination device. If this number is exceeded,
no frames will be transmitted until an acknowledgment is received.
There is also a local level-3 window for X.25 traffic. This window will
always be in effect unless the D-bit is set at the attached X.25 device.
is selected, the default (
N
is selected, any throughput class included in a call
Y
Default Packet Size
Maximum Packet Size
Maximum
is used for trans-
configured on
FRX/FRM 3.3 User Guide, Rev 04