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Advanced Diagnostics - ISDN Location codes

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An ISDN Cause code consists of 2 bytes;  the first byte contains the 'location' code (with some other information) and the second byte contains the diagnostic code.

The Location field shows who issued the diagnostic code. This is particularly useful information where the two communicating devices are on different ISDN networks (perhaps with one or more transit networks between), or are using ISDN though a 'private network' such as a PABX. 

The possible location codes are:

Location
code (Hex)		 Value
 in trace		  Meaning
(Click on a link below to highlight the component)
0 80   user
1 81   private network serving the local user
2 82   public network serving the local user
3 83   transit network
4 84   public network serving the remote user
5 85   private network serving the remote user
7 87   international network
A 8A   network beyond interworking point

loc_.gif



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First published: 15-Mar-2011
Last published: 16-Mar-2011
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