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SSxDSL-5 IDSL Module
• 0-63: Fixed TEI assignment
• 64-126: Automatic TEI assignment
• 127: Group TEI for broadcast data link connection
NS: Send sequence number of the message.
NR: Receive sequence number of the message.
L2 MSGTYPE: I: Layer 2 message type. These messages are:
• DM: Disconnect Mode
• DISC: Disconnect
• FRMR: Frame Reject
• I: Information
• RR: Receive Ready
• RNR: Receive Not Ready
• REJ: Reject
• SABME: Set Asynchronous Balanced Mode Extended
• UA: Unnumbered Acknowledgment
• UI: Unnumbered Information
• XID: Exchange Identification
L3 MSGTYPE: Displays the layer 3 messages associated with
Call Control. Table 2 shows the layer 3 messages.
Call Setup
and Clearing
Data and
Interrupt
Flow Control
and Reset
Restart
Call Request
DTE Data
DTE RR
Restart Request
Call Accepted
DTE Interrupt
Reset Request
DTE
Reset
Confirmation
Clear Request
DTE
Interrupt
Confirmation
DTE
Reset
Confirmation
DTE Clear
Confirmation
Table 2 L3 Message Type-X25 Packet Testing
The screen contains the following F-keys:
PREVIUS (F1): Displays the previous message. If the current
message displayed is the first trace, the last trace is displayed.
NEXT (F2): Displays the next message meeting the filtering cri-
teria. If the current message displayed is the last message, the
first message is displayed.
HEX/DECODE (F3): Toggles between hexadecimal and decode
display format. The trace is decoded by default when entering the
Current Trace-View screen.
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