Debugging call signaling
539
SmartWare Software Configuration Guide
42 • VoIP debugging
•
If there is a RELEASE or DISCONNECT message instead of the ALERTING, either ISDN connectivity is
not working (i.e. the message cannot be sent to the ISDN line), or the PSTN has rejected the call. Verify
ISDN port status using the
show port isdn
command (see chapter 35,
“ISDN port configuration”
on
page 454), 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 1,2,3 status
ISDN layer 1 can be verified using a
show
command:
EOXGW01#show port isdn 2 0 status
Proxy Isdn Driver: BRI 0 2
==========================
Slot: 2
Number of Ports: 4
Hardware Type: BRI
Emergency Mode: off
Clock Source Port: 0
Statistics
----------
Leased buffers: 16
Max. leased buffers: 30
Next Call Key: 2
Proxy Port: BRI 0 2 0
---------------------
Admin State: Open
Real State: Open
Operating Layer: 3
Layer 1
Clock Mode: Master
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
