[Freeswitch-users] No Ringing tone when call is forwarded to PSTN

[Peter P GMX]

Should I open a JIRA for this?

Best regards
Peter

Peter P GMX schrieb:
> Hello,
>
> we have the following scenario:
> A PSTN call (A) is coming in to Freeswitch through a Patton gateway. For
> the called FS user, call forwarding has been enabled to another PSTN
> extension (B) .
> Result: The calling party does not hear any ringing tone. Here an
> Abstract of the SIP protocol we traced (PSTN(A) and PSTN(B) is in fact
> the same Patton Gateway):
>
> PSTN(A)====INVITE===>FS
> PSTN(A)<===TRYING===>FS
>                      FS===INVITE==>PSTN(B)
>                      FS<==TRYING===PSTN(B)
>                      FS<==RINGING==PSTN(B)
> PSTN(A)<==PROGRESS===FS
>                      FS<===OK======PSTN(B)
>                      FS====ACK====>PSTN(B)
> PSTN(A)<===OK========FS
> PSTN(A)====ACK======>FS
>
> I would expect that FS answers RINGING back to PSTN(A). Instead it only
> answers SESSION PROGRESS.
> When PSTN(B) answers, they can hear each other, but there was no ringing
> tone to PSTN(A) before.
>
> Are there any hints to overcome this, besides playing early media to
> PSTN(A)?
>
> Best regards
> Peter
>
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