[asterisk-bugs] [JIRA] (ASTERISK-26063) ${PJSIP_HEADER(read, Call-ID)} does not work - documentation needs clarification for when read/write is possible

[Private Name (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-26063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=230816#comment-230816 ] 

Private Name commented on ASTERISK-26063:
-----------------------------------------

Unless I am having a breakdown, this code
exten => s,n,Set(SIPCALLID= ${CHANNEL(pjsip,call-id)})
does not work on my predial handler.
Kindly point also to the documentation where all possible CHANNEL(pjsip variables are defined. I could not find it in a Google search.

> ${PJSIP_HEADER(read,Call-ID)} does not work - documentation needs clarification for when read/write is possible
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-26063
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26063
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_pjsip
>    Affects Versions: 13.9.1
>         Environment: Linux 64 bits
>            Reporter: Private Name
>            Assignee: Rusty Newton
>         Attachments: asterisk-error-1.txt, asterisk-error.txt
>
>
> I run the code below inside a b(handler) parameter in the Dial function.
> The code is excuted but it does not return the header Call-ID, which I need to capture for billing purposes. I mean on the outbound channel. In the old SIP channel, there was a variable that held that information. No it is empty, and I guess the code below should read the header in question.
> {noformat}
> exten => s,n,Set(SIPCALLID=${PJSIP_HEADER(read,Call-ID)}
> {noformat}



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