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Debugging call signaling 631
SmartWare Software Configuration Guide 52 • VoIP debugging
ISDN port status using the show port isdn command, and the debug isdn events commands (see
below).
• Because the ALERTING is indication enough that the signaling is working, we drop the call from the com-
mand line:
unit(cfg)#call 123456 drop
• The interface then sends a DISCONNECT message to the line, and the PSTN answers with a RELEASE
COMPLETE
Verify ISDN layer 2 and 3 status
ISDN layer 2 and 3 can be verified using a
show command:
node(cfg)#show port isdn 0 2 status
Logical Isdn Driver: 0 0
========================
Slot: 0
Number of Ports: 5
Statistics
----------
Leased buffers: 24
Max. leased buffers: 34
Next Call Key: 0
Logical Port: 0 0 2
-------------------
Admin State: Open
Real State: Open
Operating Layer: 3
Link State: up
Layer 2
Permanent Layer 2: off
Protocol: PointToMultiPoint
UniSide: Net
Layer 3
Protocol: Dss1
UniSide: Net
MinChannel: 0
MaxChannel: 1
MaxCalls: 2
Hunt Mode: Ascending
Signalling Mode: Etsi
The line “link state: up” tells you that layer 1 is up. To debug the layers 2-3 state machines, use the command
debug isdn event slot port {all | layer2 | layer3}.