Buck Rogers K4ABT Manual do Operador descarregar pdf (Página 64)

The Home of Packet Radio

Parameter 12 Transport busy delay (seconds) ( default=60, minimum=1, maximum=1000)

Defines the maximum number of seconds that the transport layer will remain choked; as the result of an incoming

message that has the choke flag bit set. The purpose of this timeout is to prevent an infinite hangup in the event that

the unchoke message is lost.

Parameter 13 Transport requested window size (frames) ( default=4, minimum=1, maximum=127)

Defines the maximum number of incoming, out-of-sequence, information messages that the transport layer will

buffer while waiting for the next expected information message to arrive. Also defines the maximum number of

outgoing information messages that the transport layer will send without receiving acknowledgement.

Parameter 14 Congestion control threshhold (frames) ( default=4, minimum=1, maximum=127)

Defines the maximum allowable backlog of messages that the transport layer will buffer before it sends a choke

message. Also defines the maximum allowable backlog of frames that the link layer will buffer before it sends an

receive-not-ready (RNR) control frame.

Parameter 15 No-activity timeout (seconds) (default=900, minimum=0, maximum=65535)

Defines the maximum number of seconds that a transport-layer circuit or a link-layer connection can remain idle (i.

e., no information transfer in either direction) before it is automatically disconnected.

Parameter 16 P-persistence (p=/256) ( default=64, minimum=0, maximum=255)

Together with slot time (parameter #17), defines the exponential delay algorithm used by the node when keying up

its transmitter. When the node has something to transmit and the channel is clear, the node generates a random

integer in the range 0 - 255. If the random number is less than or equal to the P-persistence parameter, the node

keys up its transmitter immediately. Otherwise, the node delays for one slot time, generates a new random number,

and repeats the procedure.

Parameter 17 Slot time (10ms increments) ( default=10, minimum=0, maximum=127)

Together with P-persistence (parameter #16), defines the exponential delay algorithm used by the node when

keying up its transmitter. The default value of 10 corresponds to a slot time of 100 milliseconds. NOTE to the

wise... and maybe the "unwise," setting this parameter to 0 (zero) may make the node respond fast! Maybe too

fast.

Parameter 18 Link T1 timeout frack; (seconds) ( default=5, minimum=1, maximum=15)

Defines the number of seconds between link-layer retries. When digipeating is used, this value is multiplied by 2 x

D+1, where D is the number of digipeaters.

Parameter 19 Link transmit window size maxframe; ( default=3, minimum=1, maximum=7)

Defines the maximum number of outgoing information frames that the link layer will send without receiving

acknowledgement.

Parameter 20 Link maximum tries ( default=10, minimum=0, maximum=127)

Defines the maximum number of tries that the link layer will attempt before reporting a link failure. If this

parameter is set to zero (0), the link layer will retry forever (we recommend that this parameter is NEVER set to

zero (0) ).

Parameter 21 Link T2 timeout (10ms increments) (default=200, minimum=0, maximum=65535)

Defines the delay (measured in 10-millisecond increments) used by the link layer from the time it receives an

information frame until it sends an acknowledgement (RR, RNR, or REJ) control frame. The purpose of this delay

is to give the acknowledgement an opportunity to be attached to another outgoing information frame.

Parameter 22 Link T3 timeout (10ms increments) (default=0, minimum=0, maximum=65535)

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Buck Rogers K4ABT Manual do Operador Página 64