[Freeswitch-users] rtpmap question PCMU/PCMA
Steve Underwood
steveu at coppice.org
Mon May 31 10:42:28 PDT 2010
Hi,
I think its a perfectly reasonable invite, including the shiny new
capabilities stuff which should reach full RFC status shortly. As it is
new, I think the jury is currently out on whether existing poorly
implemented SIP packages will choke on it.
Steve
On 06/01/2010 12:35 AM, Michael Jerris wrote:
> This seems to be a badly broken sdp attempting to offer audio and t.38 but missing the m=image line from the sdp.
>
> Mike
>
> On May 31, 2010, at 10:57 AM, Mark Campbell-Smith wrote:
>
>
>> Hi David,
>>
>> Its an INVITE. Full invite below:
>>
>> INVITE sip:gw+Phonzo at 124.xxx.xxx.xx:5080;transport=udp;gw=Phonzo SIP/2.0
>> Record-Route:<sip:80.232.37.178;ftag=262787ae2a9104a0c7700794a69028aco;lr>
>> Via: SIP/2.0/UDP
>> 80.232.37.178;branch=z9hG4bK8a48.ecc54191b911cf6bfd73daeefeae0ada.0
>> Via: SIP/2.0/UDP
>> 80.232.37.178:5061;branch=z9hG4bK443b032c2a924807acf39718946e2c9e;rport=5061
>> Max-Forwards: 16
>> From: 010711xxxx
>> <sip:711xxxx at 80.232.37.178>;tag=262787ae2a9104a0c7700794a69028aco
>> To:<sip:4610xxxxxxx at 80.232.37.178>
>> Call-ID: M2Q1NjhhNmZjOGJjMDc3ODhlNzUyYzRiM2ZkMjQyZTE.
>> CSeq: 200 INVITE
>> Contact: Anonymous<sip:80.232.37.178:5061>
>> Expires: 300
>> User-Agent: Sippy
>> cisco-GUID: 1658214937-1822691807-2631794736-96895450
>> h323-conf-id: 1658214937-1822691807-2631794736-96895450
>> Content-disposition: session
>> Content-Length: 364
>> Content-Type: application/sdp
>>
>> v=0
>> o=Sippy 141730476 0 IN IP4 80.232.37.178
>> s=-
>> t=0 0
>> m=audio 47676 RTP/AVP 8 0 18 101
>> c=IN IP4 213.50.91.3
>> a=fmtp:18 annexb=yes
>> a=rtpmap:101 telephone-event/8000
>> a=fmtp:101 0-15
>> a=sqn: 0
>> a=cdsc: 1 audio RTP/AVP 8
>> a=cdsc: 2 image udptl t38
>> a=cpar: a=T38FaxUdpEC:t38UDPRedundancy
>> a=cpar: a=T38FaxVersion:0
>> a=cpar: a=T38MaxBitRate:14400
>> a=sendrecv
>>
>> Regards
>> Mark
>>
>> On Mon, May 31, 2010 at 4:29 PM, David Ponzone<david.ponzone at gmail.com> wrote:
>>
>>> Mark,
>>> This looks like a T38 Re-INVITE, but a weird one.
>>> David Ponzone Direction Technique
>>> email: david.ponzone at ipeva.fr
>>> tel: 01 74 03 18 97
>>> gsm: 06 66 98 76 34
>>> Service Client IPeva
>>> tel: 0811 46 26 26
>>> www.ipeva.fr - www.ipeva-studio.com
>>> Ce message et toutes les pièces jointes sont confidentiels et établis à
>>> l'intention exclusive de ses destinataires. Toute utilisation ou diffusion
>>> non autorisée est interdite. Tout message électronique est susceptible
>>> d'altération. IPeva décline toute responsabilité au titre de ce message s'il
>>> a été altéré, déformé ou falsifié. Si vous n'êtes pas destinataire de ce
>>> message, merci de le détruire immédiatement et d'avertir l'expéditeur.
>>>
>>>
>>>
>>> Le 31/05/2010 à 16:12, Mark Campbell-Smith a écrit :
>>>
>>> Hi All,
>>>
>>> I'm sure I've discussed this before, but I searched through my gmail
>>> and google and couldn't find the answer.
>>>
>>> Below is the SDP parameters from my sip provider. Is it mandatory to
>>> always include the rtpmap details for PCMU/PCMA codes? For example
>>> something like 'a=rtpmap:8 PCMA/8000' and 'a=rtpmap:0 PCMU/8000'?
>>>
>>> I'm using sipdroid on android and it rejects this with 'codec not supported'
>>>
>>> Thanks
>>>
>>>
>>>
>>> o=Sippy 141730476 0 IN IP4 xxx.xxx.xxx.xxx
>>> s=-
>>> t=0 0
>>> m=audio 47676 RTP/AVP 8 0 18 101
>>> c=IN IP4 xxx.xxx.xxx.xxx
>>> a=fmtp:18 annexb=yes
>>> a=rtpmap:101 telephone-event/8000
>>> a=fmtp:101 0-15
>>> a=sqn: 0
>>> a=cdsc: 1 audio RTP/AVP 8
>>> a=cdsc: 2 image udptl t38
>>> a=cpar: a=T38FaxUdpEC:t38UDPRedundancy
>>> a=cpar: a=T38FaxVersion:0
>>> a=cpar: a=T38MaxBitRate:14400
>>> ]
>>>
>
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