Software errors and denial events are logged for the error conditions and cause values listed in Error Conditions along with the tone treatment provided to the originating party, whether or not Look Ahead Routing (LAR) is attempted, and the type of event.
Table 1: Error Conditions
Error Condition |
Cause Value |
LAR or non-LAR |
Tone Treatment |
Software Error or Denial Event |
SBS Orig. Node gets CALL PROC w/o Null Caps, or gets ALERT, PROG, or CONN before 2 INFO msgs, or gets INFO w/bad contents |
95 (invalid msg) |
Non-LAR |
Intercept |
Denial event |
SBS Term. Node gets bearer call to allocated SBS Extension, but wrong call |
21 (call rejected) |
Non-LAR |
Reorder |
Error |
SBS Term. Node has SBS Extensions administered but none available |
47 (resource unavailable, unspecified) |
LAR |
Reorder |
Denial event |
SBS Term. Node has no SBS Extensions administered |
69 (requested facility not implemented) |
Non-LAR |
Intercept |
Denial event |
SBS Term. Node allocates SBS Extension but can’t map it to National Complete Number |
79 (service/option not implemented, unspecified |
Non-LAR |
Intercept |
Denial event |
SBS Term. Node gets incoming trunk call to non-allocated SBS ext. |
21 (call rejected) |
Non-LAR |
Reorder |
Error |
SBS Term. Node gets local endpoint call to SBS Extension (allocated or not) |
N/A |
N/A |
Intercept |
Error |
SBS Term. Node gets incoming trunk call to SBS Extension that already has 2 trunk calls |
21 (call rejected) |
Non-LAR |
Reorder |
Error |
SBS Term. Node gets SETUP w/o Null Caps |
95 (invalid msg) |
Non-LAR |
Intercept |
Denial event |
Non-SBS trunk gets SETUP or CALL PROC with NULL CAPS |
95 (invalid msg) |
Non-LAR |
Intercept |
Denial event |
Percentage of SBS Extensions in use (allocated) exceeds 80% |
N/A |
N/A |
N/A |
Denial event |
