[asterisk-bugs] [JIRA] (PRI-177) Global call generates CDPN IE with invalid contents

[Richard Mudgett (JIRA)]

    [ https://issues.asterisk.org/jira/browse/PRI-177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=228109#comment-228109 ] 

Richard Mudgett commented on PRI-177:
-------------------------------------

Please provide the reference in the standard where the ie must not be included if the number is not present.  From looking in the Q.931 specification, it is perfectly allowable for that ie to contain an empty number.

Recommendation Q.931 (05/98) Section 4.5.1
{quote}
An optional variable-length information element may be present, but empty. For example, a SETUP
message may contain a called party number information element, the content of which is of zero
length. This should be interpreted by the receiver as equivalent to that information element being
absent. Similarly, an absent information element should be interpreted by the receiver as equivalent
to that information element being empty.
{quote}

This does not appear to be a bug or misbehavior.

> Global call generates CDPN IE with invalid contents
> ---------------------------------------------------
>
>                 Key: PRI-177
>                 URL: https://issues.asterisk.org/jira/browse/PRI-177
>             Project: LibPRI
>          Issue Type: Bug
>      Security Level: None
>          Components: General
>    Affects Versions: 1.4.13
>         Environment: An ISDN interface in NT mode
>            Reporter: Birger "WIMPy" Harzenetter
>            Assignee: Richard Mudgett
>            Severity: Minor
>
> When trying to send a global call to a NT span, a called party number IE is generated without a called party number, or in other words octet(s) 4 is/are missing.
> Correctly the whole IE should be absent in this case.
> The syntax of the dial string does not matter. Tried group or channel, with or without trailing /.



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