[asterisk-bugs] [JIRA] (ASTERISK-25858) [patch]Early media not processed when received ACM with some conditions

[Rusty Newton (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-25858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=229978#comment-229978 ] 

Rusty Newton commented on ASTERISK-25858:
-----------------------------------------

Thanks! The next step will be to get your patches up on Gerrit.

Here is a [linked to the Patch Contribution Process|https://wiki.asterisk.org/wiki/display/AST/Patch+Contribution+Process]



> [patch]Early media not processed when received ACM with some conditions
> -----------------------------------------------------------------------
>
>                 Key: ASTERISK-25858
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25858
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_dahdi/SS7
>    Affects Versions: 13.0.0, 13.0.1, 13.0.2, 13.1.0, 13.1.1, 13.2.0, 13.2.1, 13.3.0, 13.3.1, 13.3.2, 13.4.0, 13.5.0, 13.6.0, 13.7.0, 13.7.1, 13.7.2
>         Environment: libss7-2.0.0
> SS7 digital trunk environment
>            Reporter: Igor Nikolaev
>              Labels: SS7
>         Attachments: bad.pcap, isup.c.patch, isup.h.patch, libss7.h.patch, sig_ss7.c.patch
>
>
> If we making outbound call via SS7 and after sending ISUP IAM we got ACM with following conditions:
> Backward call indicators contain called party's status indicator "no indication" (i.e. == 0);
> Optional backward call indicators contain in-band information indicator (i.e. == 0x01);
> we must do a PROGRESS SIP message and start early media channel.
> Required procedure described at the ETSI ES 283 027 V1.4.0 (2007-09) in section 7.2.3.1.4a Sending of 183 Session Progress for early media scenarios.



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