HP General IO Connectivity manual Verify Level 2 Values Field Descriptions

Configuration

Configuring the X.25 Link

Step	2. Enter or modify field values as required (refer to the field descriptions
		below). Use the Help button to display information and instructions for
		each field.
Table 3-11		Verify Level 2 Values Field Descriptions
		k - Level 2	Maximum number of frames that can be
		Window Size	transmitted without an acknowledgment. The
			range is 1 through 7 for Modulo-8 and 1 through
			127 for Modulo-128. The default is 7. Use the
			value given on your subscription form.
		T1 -	Maximum number of milliseconds to wait for an
		Retransmission	acknowledgment before retransmitting a frame.
		Timer	The range is 100 to 12000. The default is 3000.
			Use the value given on your subscription form.
		T3 - Idle Timer	Maximum number of milliseconds that a line can
			be idle before it is declared disconnected. This
			value should be greater than or equal to the
			Retransmission Timer (T1) times the
			Retransmission Count (N2). The range is 1000 to
			240000. The default is 60000. Use the value given
			on your subscription form.
		N1 - Frame Size	Maximum number of octets that can be
			transmitted in a single frame. The range is 149
			(minimum) through 4103. The default is 149.
		N2 -	Maximum number of times a given frame can be
		Retransmission	transmitted before an error condition is
		Count	identified. The range is 0 through 255. The
			default is 20.
NOTE		Because the timer values count the amount of time between
		unacknowledged frames, you may need to increase the values of T1
		(Retransmission Timer) and T3 (Idle Timer) if you use Modulo-128 with
		a window size greater than seven.
Step	3. Click on OK to return to the “Configure X.25 Card” dialog when you have
		finished verifying level 2 values.

48 Chapter 3