Kentrox AI296 manual 128 256 512

AI296 Version 9.8x User’s Guide

Link Configuration: Quick X.25 Configuration

This example displays Max Packet Size set to 256 and Packet Window Size set to 5.

	Quick X.25 Menu
Link being configured	. . . . . . . . . . . . .	. . . .	. . .	02
Interface Mode		. .	DTE	[DCE]
Port speed (0=external clocking)	. . . . . . . . . . . .	. . . . . . . .		9600
X25 Passive Link Mode	. . . . . [Normal]	Passive	Extended
Passive Link with Clocking		Enabled	[Disabled]
Frame Level Disconnect	. . . . . [Active]	Passive	Other
Frame Window Size		. . . . . . . .		. .7
Max Packet Size		128	[256]	512
Packet Window Size		. . . .	. . . .	. .5

Passive Link Settings

Description

The passive link configuration settings are configured using two menu items:

zX.25 passive link mode—Defines the mode of operation for an X.25 link as one of the following:

z Normal—Specifies the mode used for normal X.25 service.

z Passive—Specifies the mode that allows AI296 to operate with the SCCS application of the AT&T 5ESS. The SCCS application requires redundant links at the 5ESS. These links are called SCC0B and SCC1B. Only one link is active at a time. The 5ESS constantly tries to bring up whichever link is idle. If the 5ESS has SCC0B active, it will try to bring up SCC1B. If SCC1B comes up, the 5ESS will drop SCC0B and send information on SCC1B. Passive mode ensures that either SCC0B or SCC1B will be up but not simultaneously.

z Extended—Specifies the mode that supports passive link capability to the 5ESS over a TCP/IP network. Extended mode ensures that either SCC0A or SCC1A will be up but not simultaneously and will temporarily take down the corresponding link if connections fail or cannot be placed because the corresponding remote link is down.

zPassive link with clocking—Enables or disables an X.25 passive link from supplying a clock value while the link is in the inactive state.



Note: Old AT&T 5ESS interface cards (TN983) require clocking with the passive link set up.

Menu Item Type

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