Appendix BCause and Diagnostic Codes

Cause Codes

Clearing Causes

The clearing cause recorded in a call packet provides a high-level indication of why
the call was cleared and where the error occurred (e.g., error by the source user, or
internal network error). For example, when the diagnostic code indicates that a pro-
tocol error occurred, the clearing ca use might indicate that the error was committed by
the destination user (i.e., remote procedure error).
From DCE From DTE
Hex. Dec. Hex. Dec. Abbr. Description
00 00 80 128 DTE DTE originated
01 01 81 129 O CC Num ber bu sy
02 02 82 130 (none) Password error (remote control, file
transfer, or alarm routing)
03 03 83 131 IN V Invalid facility request
04 04 84 132 Remote control attempted while
non-int errup able op erati o n in pro gress
05 05 85 133 N C Ne t work con gest ion
09 09 89 137 D E R Out of ord er
0B 11 8B 139 NA Access barred
0D 13 8D 141 PAD Not obtainable
11 17 91 145 RPE Remote procedure error
13 19 93 147 ERR Local procedure error
15 21 95 149 RO O RPOA out of or der
19 25 99 153 RNA Reverse charge acceptance not subscribed
21 33 A1 161 ID Incompatible destination
29 41 A9 169 FNA Fast select acceptance not subscribed
39 63 B9 185 SA Ship absent