Westermo ID-90 - Manual (Page 92)

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Diagnostic and error messages
For the diagnostic of erroneous situations the following functionality is supported.
Please check first the behaviour of LED displays, if an ISDN connection can not be
established. Refer to list of LED displays.
Error messages from AT command set
When the extended result messages are selected using the command ATV2 ISDN error
codes are displayed in addition to the standard AT result messages.
ISDN error causes from the ISDN network are always coded as 34xxH, whereas the last
two digits xx represent the ISDN cause in hexadecimal coding. The meaning can be taken
from the following tables ISDN causes (see chapter: LED indicators).
ISDN Explanation Translation
Cause Code to AT
result code
Dec Hex
10x81Unallocated (unassigned) number 3
2 0x82 No route to transit network 3
3 0x83 No route to destination 3
6 0x86 Channel unacceptable 6
7 0x87 Call awarded and being delivered in an established channel 6
16 0x90 Normal clearing 3
17 0x91 User busy 7
18 0x92 No user responding 8
19 0x93 No answer from user (user alerted) 8
20 0x94 Subscriber absent (device off) 8
210x95 Call rejected 8
22 0x96 Number changed 3
26 0x9A Non selected user clearing 3
27 0x9B Destination out of order 8
28 0x9C Invalid number format (incomplete number) 3
29 0x9D Facility rejected 3
30 0x9E Response to STATUS ENQUIRY 3
310x9F Normal disconnect unspecified 3
34 0xA2 No circuit/channel available 7
38 0xA6 ISDN network out of order 6
410xA9 Temporarily failure 6
42 0xAA Switching equipment congestion 6
43 0xAB Access information discarded 6
44 0xAC Requested circuit/channel not available 6
46 0xAE Precedence call blocked 6
47 0xAF Resource unavailable unspecified 6
49 0xB1Quality of service unavailable 3
Table 4 ISDN causes and their explanation (DSS1)