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TABLE A-2
Q.931 Signal Messages
Decimal
Value
LCD and EIA Port Text
0
DIAL TONE ON
1
RINGING
2
INTERCEPT TONE ON
3
REORDER TONE ON
4
BUSY TONE ON
5
CONFIRM TONE ON
6
ANSWER TONE ON
7
CALL WAIT TONE ON
8
O-H WARNING TONE ON
9
CUSTOM TONE ON
11
BUSY VERIFY TONE ON
12
ERROR TONE ON
13
STUTTER DIAL TONE ON
17
RECALL DIAL TONE ON
18
BARGE-IN TONE
26
RECALL DIAL TONE ON
127
UNSPECIFIED TONE
250
INCOMING CALL TONE
251
PRIORITY CALL TONE
253
COSTLY ROUTE TONE ON
nnn
SIGNAL nnn
Appendix A — Cause Code Tables
A-3
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