[Freeswitch-users] 0.0.0.0 reinvite in SDP

Miha miha at softnet.si
Thu Jun 20 10:48:55 MSD 2013


HI Michale,

after the call is answered (second trasfer) they send first invite 
withoud SDP, we send back 200 ok SDP and than they sends ACK SDP in 
which they send right ip.

According to RFC this is ok. Is this maybe bug on FS side?

Miha

Dne 6/20/2013 8:11 AM, pis(e Miha:
> HI Michel,
>
> so after other side puts you on hold our side gets reinvite with ip in 
> sdp 0.0.0.0 which is ok. After other side pickup a call from trasfer 
> there should be another reinvite with ip in sdp for media if I am 
> right? I guess this is how it shoud work.
> Do you maybe know if this is also defined in RFC as I unable to find 
> this thing, because this voip proved is saying that also right is 
> after call is pickuped from on hold thay can send invite whithout SDP.
>
> tnx!
>
> miha
>
> Dne 6/19/2013 4:32 PM, pis(e Michel Brabants:
>> This is normal behaviour for Freeswitch as it is a b2b. A phone will 
>> also interpret the sdp as being put on-hold. Like I said, normally, 
>> they should be sending a reinvite with a non-0.0.0.0-sdp-ip so that 
>> the phone/freeswitch knows where to send the rtp to.
>>
>> You can also use another option for hold_music in freeswitch. I think 
>> it is hold_music=hold (I'm using this) where it will not send music 
>> on hold, but will pass the holdsignalling to the phone. However, this 
>> won't  change your case normally, as there should still be a reinvite 
>> with ip afterwards as far as I can tell (didn't look at trace yet).
>>
>> Michel
>>
>> On Wed, Jun 19, 2013 at 2:53 PM, Miha <miha at softnet.si 
>> <mailto:miha at softnet.si>> wrote:
>>
>>     HI,
>>
>>     I can see where is a problem. After 2-trasfer is made other side
>>     sends in sdp 0.0.0.0. which is ok, but when call is picked up we
>>     get only invite, without SDP, so I guess FS sends media to 0.0.0.0.
>>
>>     Is this normal behaviour for musing on hold? this proved is
>>     saying that thay have problems only with as.
>>
>>     p.s.: they are using netcentrex-pbx.
>>
>>     thanks!
>>     MIha
>>
>>     Dne 6/19/2013 11:28 AM, pis(e Miha:
>>>     Hi Michel,
>>>
>>>     I was just replaying to your email as I saw you email:) So, yes
>>>     unhold-reinvite is a problem.
>>>
>>>     Here is a trace of a call:
>>>
>>>     http://pastebin.freeswitch.org/21075
>>>
>>>     Thanks for help!
>>>     miha
>>>
>>>     Dne 6/19/2013 10:58 AM, pis(e Michel Brabants:
>>>>     After rereading the issue, it seems similar to the
>>>>     freeswitch-"issue", but I would say it is a bug in the
>>>>     netcentrex-pbx. I suppose netcentrex stays in the signalling
>>>>     path (like a b2b) in this case as they're sending a reinvite.
>>>>     Without a siptrace, I would say that they should also sent the
>>>>     unhold-reinvite.
>>>>
>>>>     Michel
>>>>
>>>>     On Wed, Jun 19, 2013 at 10:39 AM, Miha <miha at softnet.si
>>>>     <mailto:miha at softnet.si>> wrote:
>>>>
>>>>         HI,
>>>>
>>>>         I am having one issue with music on hold.
>>>>
>>>>           A calls B (B is at different voip provider that is using
>>>>         netcentrex
>>>>         softswitch), after B do xfer it puts A on hold and send
>>>>         reinvite with
>>>>         0.0.0.0 in sdp, when C try to pickup this call, just
>>>>         different music on
>>>>         hold appears but there is no media from C.
>>>>
>>>>         how to deal with this issue?
>>>>
>>>>         tnx!
>>>>
>>>>         miha
>>>>
>>>>         _________________________________________________________________________
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>>>>         http://www.freeswitchsolutions.com
>>>>
>>>>         
>>>>         
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>>>>
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>>>>     http://www.freeswitchsolutions.com
>>>>
>>>>     
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>>>
>>>
>>>
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>>>     http://www.freeswitchsolutions.com
>>>
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>>
>>
>>     _________________________________________________________________________
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>>     http://www.freeswitchsolutions.com
>>
>>     
>>     
>>
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>>
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>>
>>
>>
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>>
>> 
>> 
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>
>
>
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
> 
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