ISDN ANALYZER D1080 - messkom.de
ISDN ANALYZER D1080 - messkom.de
ISDN ANALYZER D1080 - messkom.de
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USER’S MANUAL REV. 5 <strong>ISDN</strong> <strong>ANALYZER</strong> <strong>D1080</strong><br />
B. POSSIBLE VALUES OF THE “CAUSE” FIELD<br />
This chapter <strong>de</strong>scribes the possible values of the Cause field<br />
divi<strong>de</strong>d into “Classes”.<br />
Each class is ma<strong>de</strong> up of similar causes.<br />
! The information contained in this chapter is only for<br />
reference purposes and should not be consi<strong>de</strong>red as<br />
official. For any dispute, see “ETSI 300 102-1 annex G”<br />
standard.<br />
B.1. “NORMAL” CLASS<br />
Cause #1 - “unallocated (unassigned) number”<br />
It indicates that the number requested by the calling user cannot<br />
be reached because it does not exist, although the format is valid.<br />
Cause #2 - “no route to specified transit<br />
network”<br />
The terminal has been requested to send the call through a<br />
specific transit network that is not acknowledged by the terminal.<br />
The transit network is not acknowledged either because it does<br />
not exist or because it does not support the terminal which is<br />
sending the cause.<br />
This cause is supported only by some networks.<br />
APPENDIX B. POSSIBLE VALUES OF THE “CAUSE” FIELD 201
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