Hello, Using FS release 1.6.20 I'm trying to originate call via loopback with preset codec originate {loopback_initial_codec=PCMA}loopback/12550/internal &park() But codec ignored and set to L16. 2018-02-16 18:51:48.294389 [DEBUG] switch_ivr_originate.c:2142 Parsing global variables 2018-02-16 18:51:48.294389 [NOTICE] switch_channel.c:1104 New Channel loopback/12550/internal-a [9de6c978-4ef8-4f2d-a7d8-f630bebe13af] 2018-02-16 18:51:48.294389 [DEBUG] mod_loopback.c:158 loopback/12550/internal-a setup codec L16/8000/20 2018-02-16 18:51:48.294389 [NOTICE] switch_channel.c:1102 Rename Channel loopback/12550/internal-a->loopback/12550-a [9de6c978-4ef8-4f2d-a7d8-f630bebe13af] 2018-02-16 18:51:48.294389 [DEBUG] mod_loopback.c:1174 (loopback/12550-a) State Change CS_NEW -> CS_INIT 2018-02-16 18:51:48.294389 [DEBUG] mod_loopback.c:601 loopback/12550-a CHANNEL KILL 2018-02-16 18:51:48.294389 [DEBUG] switch_core_state_machine.c:584 (loopback/12550-a) Running State Change CS_INIT (Cur 1 Tot 1230) 2018-02-16 18:51:48.294389 [DEBUG] switch_core_state_machine.c:627 (loopback/12550-a) State INIT 2018-02-16 18:51:48.294389 [NOTICE] switch_channel.c:1104 New Channel loopback/12550-b [e945099e-2ed9-4c49-9d48-58a25756fb08] 2018-02-16 18:51:48.294389 [DEBUG] mod_loopback.c:158 loopback/12550-b setup codec L16/8000/20 -- Serge S. Yuriev Lead VoIP engineer