[asterisk-bugs] [JIRA] (ASTERISK-26251) "400 Bad Request" error on Siemens C470ip SMS via pjsip

[Joshua Colp (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-26251?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joshua Colp closed ASTERISK-26251.
----------------------------------

    Resolution: Not A Bug

This is a bug in the device itself. It has provided the following SDP:

{noformat}
v=0
o=- 5010 9 IN IP4 109.60.xxx.xxx
s=Mapping
c=IN IP4 109.60.xxx.xxx
t=0 0
m=audio 5010 RTP/AVP 8 0 101
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
{noformat}

This is offering payloads 8, 0, and 101.
8 is ulaw.
0 is alaw.

101 is a dynamic payload that has no defined value, it is up to the rtpmap to provide what it actually is. It's likely telephone-event for DTMF but as the payload is dynamic it could be something else in practice. The device should be sending an rtpmap for it to say it is telephone-event.

> "400 Bad Request" error on Siemens C470ip SMS via pjsip
> -------------------------------------------------------
>
>                 Key: ASTERISK-26251
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26251
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip
>    Affects Versions: 13.7.2
>            Reporter: Dmitriy Serov
>         Attachments: c470ip.txt
>
>
> Siemens C470IP sending SMS.
> Asterisk answered "SIP/2.0 400 Bad Request"
> Warning: 399 SIP "Unknown error 220030"
> Similar ASTERISK-24242, but SDP too short.
> Logs attached.



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