This tab provides trace options for monitoring the system's Integrated Services Digital Network (ISDN) digital trunks (Basic Rate Interface (BRI) and Primary Rate Interface (PRI)).
Events
Option
Description
Layer 1
Log information on the status of the system’s ISDN Layer 1 software state machine and associated events.
Layer 2
Log information on the status of the system’s ISDN Layer 2 software state machine and associated events.
Layer 3
Log information on the status of the system’s ISDN Layer 3 software state machine and associated events.
Packets
Option
Description
Layer 1 Send
Log the data packets transmitted at the ISDN Layer 1 level.
Layer 1 Receive
Log the data packets received at the ISDN Layer 1 level.
Layer 2 Send
Log the data packets transmitted at the ISDN Layer 2 level.
Layer 2 Receive
Log the data packets received at the ISDN Layer 2 level.
Layer 3 Send
Log the data packets transmitted at the ISDN Layer 3 level.
Layer 3 Receive
Log the data packets received at the ISDN Layer 3 level.
Layer 1 Event Messages
The following messages are output when Layer1 events are selected:
ISDNL1Evt: v=[line_no.] peb=[hardware device no.], [new state] [old state] where the state values shown are:
State Values
Definition
F1
Inactive
F2
Sensing
F3
Deactivated
F4
Awaiting signal
F5
Indentifying input
F6
Synchronised
F7
Activated
F8
Lost framing
ISDNL1Evt: v=[line_no.] peb=[hardware device no.], [message] where message values are:
Message Values
Definition
PHAI
Physical Activate Indication (i.e. Line is UP)
PHDI
Physical Deactivate Indication (Line is DOWN)
T3TO
T3 timeout has occurred
TxErr
A Transmit error has occurred
UnLocked
The system is not able to lock its clock to this line
Locked
The system and the clock extracted from this line are locked together.
