Events: X25-Packet

	Event Structure	What is a BOP event ?...
	X25-Packet decoding	by using Clarinet Event-Editor...
	Protocol stack	Which protocol specifications to be defined in the current filter ?...
	Standards	ITU Recommendation X25
	Options	Changing the display format in the current filter ?...

x25pac_vs_decod.gif (12133 octets)

Event information	Date:	Date of the event (end of BOP frame) in the format: hh:mm:ss/xxx.y
	N	The interface number which identifies the Clarinet-interface connected to the host.
	Link type	TS: Signalling Link Transmit direction RS: Signalling Link Receive direction TD: Data Link Transmit direction RD: Data Link Receive direction
	Dx	The decoding level as specified in the filter (protocol stack).
Protocol fields	X25-Packet	(Address) <PDU type> Ctrl-1 [nnnn] Ctrl-2
Data field	Optional field of the conveyed data, displayed if no upper layer of protocol has to be decoded. The display mode can be Hexa, Ascii or Ebcdic as specified in the filter. User data field, if present, is part of data field and displayed after the string User data.

(Address)

in the following format: (x,yyy)

LC group number.

yyy

LC number.

<PDU_type>

Type of packet.

Ctrl-1

Control field in the format A:x D:x or Q:x D:x M:x PR:xxx PS:xxx :

A:x

value of A bit (0 if nonTOA/NPI address format or 1 if TOA/NPI address format).

D:x

value of Delivery confirmation bit (0 or 1).

Q:x

value of Qualifier bit (0 or 1).

M:x

value More data bit (0 or 1).

PR:xxx

value of PR (packet receive sequence number).

PS:xxx

value of PS (packet send sequence number).

[nnnn]

Length of the data field.

Ctrl-2

Optional complementary fields are displayed according to the display mode selected in the filter :