Emulex DCP_link - Manual (Page 100)

X.25 Configuration 7-7
When establishing a connection to an X.25 network, you must set this
parameter to DTE (the default value) if you are connecting to a X.25
service provider.
Default Inbound/Outbound Packet Size - The Inbound Packet uses the
default packet size for a inbound call unless another packet size is
specified. Set this value to correspond to your network subscription. The
Outbound Packet determines the maximum out going data packet size
when a call is established without
the Flow Control Negotiation
parameter. The default Outbound Packet Size should be a value that is
agreed upon by the PDN and the remote DTE.
Sequencing Modulo - Control over the numbering of sequential data
packets allowed in a window. Emulex X.25 only allows Modulo 8.
Default Window Size - Specifies the default value of the maximum
number of sequentially numbered data packets that can be transmitted by
the local DTE without receiving an acknowledgment at any given time.
When a virtual circuit is established without flow control negotiation,
this value is used as an outbound window size. You should set this
parameter to the value agreed upon by the PDN.
Note: The following timers and counters are not
configurable.
T20 (Restart Response Timer) - Determines the amount of time, in
seconds, that the local DTE waits when it issues a Restart Request packet
to receive a restart confirmation or restart indication. When the time limit
expires, the Restart Request packet is retransmitted.
T21 (Call Response Timer) - Specifies the amount of time, in seconds,
that the DTE waits for a response to an outbound Call Request packet.
T22 (Reset Response Timer) - Specifies the amount of time, in
seconds, that the DTE waits for a response to a Reset Request packet.
T23 (Clear Response Timer - Specifies the amount of time, in seconds,
that the DTE waits for a response to a Clear Request packet.
T24 (Ace-Send Timer) - Specifies the amount of time, in seconds, that a
DTE waits when a packet carrying a valid acknowledgment is sent.
This timer is used to ensure that no acknowledgment is lost. If the timer
expires, an RR (Receiver Ready) packet is sent.