Avocent Cyclades-PR2000 installation manual X.25 Menu Continued, Parameter, Description

Cyclades-PR2000

X.25 Menu (Continued)

Parameter	Description
Packet Size	The packet size to be sent across the interface. This number may be negotiated
	if the Packet Size Facility is utilized (see last parameter in this table).
Number of Retries N2	Number of times an information frame can be resent, without response, before
	the link is considered down.
TL	Time the frame level waits for an acknowledgement for a given frame before re-
	sending it.
T2	Time that can elapse, after receiving a frame, until the router must send an
	acknowledgement.
T21	Call Request response Timer. After this time has elapsed, the DTE sends a
	Clear message.
T23	Clear Request response Timer. After this time has elapsed, the DTE retransmits
	the Clear message.
Negotiable Facilities	Initiates facility negotiation during virtual circuit creation.
Send Facility	Determines which facilities are negotiated during virtual circuit creation: Packet
	size is part of the flow control parameters negotiation, Throughput is part of the
	throughput class negotiation, and N3 Window (Level 3 Window Size, above) is
	part of the flow control parameters negotiation.

Chapter 8 - Data-Link Protocols (Encapsulation) 62