AT&T 7506 User Manual page 71

Decimal Value
50 Requested facility not subscribed
51 Call type incompatible with service request
52 Outgoing calls barred
53 Service operation violated
54 Incoming calls barred
57 Bearer service not authorized
58 Bearer capability not presently available
63 Service or option not available
65 Bearer service not implemented
66 Channel type not implemented
69 Requested facility not implemented
79 Service or option not implemented, unspecified
81 Invalid call reference value
82 Identified channel does not exist
85 Invalid digit value for number
86 Call having requested call identity has been cleared
88 Incompatible destination
91 Transit network does not exist
96 Mandatory information element is missing
97 Message type non-existent or not implemented
98 Message not compatible with call state
99 Information element not implemented
100 Invalid information element contents
101 Message not compatible with call state
101 Protocol error threshold exceeded
102 Recovery of timer expiry
111 Protocol error, unspecified
127 Interworking, unspecified
ALL OTHERS Cause nnn
ALL OTHERS Network Specific nnn
ALL OTHERS National Specific nnn
TABLE A-3 (Continued)
Q.931 Cause Messages
EIA Port Text LCD Text Origin
50 CCITT
NS 51 Network Specific
52 CCITT
NS 53 Network Specific
54 CCITT
57 CCITT
58 CCITT
63 CCITT
65 CCITT
66 CCITT
69 CCITT
79 CCITT
81 CCITT
82 CCITT
85 CCITT
86 CCITT
88 CCITT
91 CCITT
96 CCITT
97 CCITT
98 CCITT
99 CCITT
100 CCITT
101 CCITT
NS 101 Network Specific
102 CCITT
111 CCITT
127 CCITT
nnn all other CCITT
NS nnn all other Network Specific
NT nnn all other National Specific
Appendix A — Cause Code Tables A-5