[Freeswitch-users] SIP info not relayed when call is on hold

Fran├žois-Xavier G. fxgeneste at gmail.com
Wed May 13 13:33:50 UTC 2020

Hello guys,

    I am trying to exchange SIP info message (dtmf signal) between Phone 1
and Freeswitch B as follows :

Phone 1 <----> Freeswitch A  <-----> Freeswitch B

    Everything works fine except when the call leg between Freeswitch A and
B is on hold (for instance, the Freeswitch A has received an INVITE with
"a=sendonly" from Freeswitch B). In this case, Freeswitch A correctly
receive the SIP INFO message from Phone 1, but does not transfert it to
Freeswitch B (as it does normally without having the call on hold).

    I do not see any errors or warnings in freeswitch logs, simply,
freeswitch A is not sending the SIP info to freeswitch B. I'm using fs

    Have any of you ever had this kind of needs or know how to solve it ?


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