[asterisk-users] 180 Ringing missing

[marek]

Dne 01/12/2020 v 12:58 Joshua C. Colp napsal(a):
> On Tue, Dec 1, 2020 at 7:20 AM marek <cervajs64 at gmail.com 
> <mailto:cervajs64 at gmail.com>> wrote:
>
>     hi,
>
>     after upgrade from Asterisk 11 to Asterisk 13.38.0(chan_sip) (i know,
>     its old. customer is very conservative...)
>
>     i have problem with missing 180 Ringing
>
>     flow is easy (PBX -> Asterisk -> SIP SBC)
>
>     Asterisk 11
>     PBX - Asterisk
>     -> INVITE
>     <- 100 Trying
>     <- 183 Session Progress
>     ( <- RTP -> )
>     <- 180 Ringing
>     <- 200 OK
>
>     Asterisk 13
>     -> INVITE
>     <- 100 Trying
>     <- 183 Session Progress
>     ( <- RTP -> )
>
>     __MISSING RINGING___
>
>     <- 200 OK
>
>     temporarily i solved problem with using "R" param
>
>     R: Default: Indicate ringing to the calling party, even if the
>     called party
>          isn't actually ringing. Allow interruption of the ringback if
>     early
>     media
>          is received on the channel.
>
>     it changed to
>
>     Asterisk 13 (Dial(${ARG1},300,R)
>     -> INVITE
>     <- 100 Trying
>     <- 180 Ringing
>     <- 183 Session Progress
>     ( <- RTP -> )
>     <- 200 OK
>
>     any ideas why Ringing is missing? any solutions?
>
>
> Have you compared the signaling in both directions between the two 
> versions to see if there is a difference?
>
whats your goal with this question?

asking if there are some side effects in incoming call ? (SBC -> 
Asterisk -> PBX)



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