Cause #
004
008
009
010
011
26
051
053
101
B
4
Table B-2 National Standardized Cause Values
Message Displayed
VACANT CODE ......................... Unused area or central office
PREFIX 0 DIALED IN ERROR
PREFIX 1 DIALED IN ERROR
PREFIX 1 NOT DIALED
EXCESSIVE DIGITS RECEIVED, .... Switch has truncated
CALL IS PROCEEDING
MISROUTED CALL TO A PORTED
NUMBER
CALL TYPE INCOMPATIBLE WITH
SERVICE REQUEST
SERVICE OPERATION VIOLATED
PROTOCOL ERROR, .................. Call cleared due to
THRESHOLD EXCEEDED
APPENDIX B
Description
code
excessive digits and call is
proceeding
excessive protocol errors