B
ISDN COMPLETION CAUSE CODES
This appendix lists the Completion Cause Codes displayed in the Span
Status dialog box. The codes, listed in Table 80
, detail the reasons for the
termination of a call. See “Configuring and Managing E1
Digital Line Cards” in Chapter 3.
These completion cause codes descriptions are guidelines only.
The detailed cause may vary according to PSTN.
Table 80 Completion Cause Codes
Class Grouping Hex Code
Decimal
Code Description Details
Normal events 0x00 0 No diagnostic
0x01 1 Unassigned
number
The requested destination, although valid, cannot be
reached.
0x02 2 No route The sending equipment (sending the cause)
is requested to route the call through an unrecognized
transit network.
0x03 3 No route to
destination
The called user cannot be reached because the
network does not serve the destination.
0x06 6 Channel
unacceptable
The last identified channel is not acceptable to the
sending entity.
0x07 7 Call awarded The incoming call is connected to a channel already
established for similar calls (e.g. packet-mode X.25
virtual calls).
0x10 16 Normal
clearing
This call is being cleared by one of the users involved.
0x11 17 User busy The called user cannot accept another call although
compatibility is established.
0x12 18 No user
responding
The user does not respond to call establishment
messages with either an alerting or connect indication
within the allowed time.
0x13 19 User alerting
no answer
The user has provided an alerting indication but no
connect indication within the allowed time.
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