Serial Cable Assemblies and Pinouts

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Cause Code Fields

Table A-2 lists the ISDN cause code fields that display in the following format within the debug commands:

graphics/aequ01.gif


Table A-2. ISDN Cause Code Fields
Field Value ”Description
0x The values that follow are in hexadecimal.
y1

8 ” ITU-T standard coding.

y2

0 ” User

1 ” Private network serving local user

2 ” Public network serving local user

3 ” Transit network

4 ” Public network serving remote user

5 ” Private network serving remote user

7 ” International network

A ” Network beyond internetworking point

z1 Class (the more significant hexadecimal number) of cause value. Refer to Table A-3 for detailed information about possible values.
z2 Value (the less significant hexadecimal number) of cause value. Refer to Table A-3 for detailed information about possible values.
a1 (Optional) Diagnostic field that is always 8.
a2

(Optional) Diagnostic field that is one of the following values:

” Unknown

1 ” Permanent

2 ” Transient

The following is sample output of this form from the debug isdn q931 command:

graphics/aequ02.gif


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CCIE Practical Studies, Volume I
CCIE Practical Studies, Volume I
ISBN: 1587200023
EAN: 2147483647
Year: 2001
Pages: 283
Authors: Karl Solie

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