[asterisk-users] [External] 180 Ringing missing

[marek]

i know

but there is some existing integration based on AMI event NewExten

https://wiki.asterisk.org/wiki/display/AST/Asterisk+13+ManagerEvent_NewExten 
ChannelStateDesc = Ringing

and if 180 Ringing is missing, there is no event

as you may have guessed, its hard to convice "Integrator" to "change" 
the code



Dne 01/12/2020 v 13:22 Floimair Florian napsal(a):
> If you have 183 Session progress, there is no need to send 180 Ringing (especially not AFTER 183 Session progress), as you already have early media instead. Having both is actually a bit misleading IMHO.
>
> So this is actually correct. One should not rely on any of these 1xx "Provisional" messages.
> They may or may not be sent, without violating SIP standards.
>
> Am 01.12.20, 12:20 schrieb "asterisk-users im Auftrag von marek" <asterisk-users-bounces at lists.digium.com im Auftrag von cervajs64 at gmail.com>:
>
>
>      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?
>
>      Marek
>
>
>