[asterisk-bugs] [JIRA] (ASTERISK-23018) PJSip 'allow=all' results in failed SDP negotiation

[Matt Jordan (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-23018?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=213093#comment-213093 ] 

Matt Jordan commented on ASTERISK-23018:
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Ugh. Yet another reason to hate on {{allow=all}}.

In the end, we're going to have to just "pick" a preferred codec, which is less than ideal.

As odd as this may sound, I'd prefer to keep Asterisk rather simple with that - if someone says offer all, we should just walk the list and send them out the order that they come up in. Having hard-baked logic that says "g722 first, then ulaw/alaw, then g729 if it's there, etc." would just be all sorts of wrong.
                
> PJSip 'allow=all' results in failed SDP negotiation
> ---------------------------------------------------
>
>                 Key: ASTERISK-23018
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23018
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_pjsip
>    Affects Versions: 12.0.0-beta2
>            Reporter: xrobau
>
> Adding 'allow=all' to a pjsip endpoint results in a codec error:
>  No joint capabilities between our configuration((g723|gsm|ulaw|alaw|g726|adpcm|slin|lpc10|g729|speex|speex16|il) and incoming SDP((nothing))
> Note that after speex16 the start of 'ilbc' appears to be there. 

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