[Freeswitch-users] One way audio only in a specified context

[Mr.Gab]

Hello everybody,

I have a problem with a FS installed on the cloud (configured following 
Freeswitch EC2 Wiki). Everything is ok except a one way audio behaviour that i 
have only if i transfer an outbound call. If I transfer an inbound call I 
don't have this problem. I'll explain the scenario with a little schema

INBOUND CALL -> Extension 100 -> transfer to 101   WORKS.

Extension 100 -> OUTBOUND CALL -> transfer to 101 ONE WAY AUDIO.

I have one snom 300 (extension 100) and 3 Gigaset A510IP behind a tomato 
router.

Can someone suggest me some way to manage this issue?

Thanks in advice
crazygabry