b0-b3: Number of digits of the testing station number
b4-b7: Error Numbers (See table.)
Error Numbers and Their Meanings
ERROR
NO.
MEANING
0---
1 The testing station is restricted from activating the service.
2 Route Number error of the designated trunk
3 Trunk Number error of the designated trunk
4 Trunk busy
5 Sender busy
6 SMDR failure
7 Call origination restriction
8 Register busy
9 Trunk number error - when the trunk has been designated
by SHF.
A Trunk busy - when the trunk has been designated by SHF.
B Inter-digit timer expiration
C Register or sender is defective with respect to DP, DP/PB
D Register of sender is faulty with respect to PB
E Tone fault
F Test Processing error