Quick one: Virtual SBC cannot allocate transcoding session

Hi folks,

you may have calls not being established when passing through your virtual SBC, combined with a similar finding in the logs:

10:49:33.089  10.15.13.1  local3.warn    [S=1088683] [SID=823543:7:49500]  (N   989411)!! [ERROR] ResourceCounter: Cannot allocate more Coder Transcoding session [0/0] 

10:49:33.089  10.15.13.1  local3.warn    [S=1088684] [SID=823543:7:49500]  (N   989412)!! [ERROR] (#16)RTS::AllocateResource Allocate Resource - cannot allocate CODERTRANSCODING. probably lack of resources

Make sure following is in place in your machine / config:

• SBC must have separate CPU for transcoding,
• AVX must be supported
• SBC Performance Profile: Optimized for Transcoding : Setup -> Signaling & Media -> SBC -> SBC General Settings

Usually one of these three is missing on customer configurations and causing a lot of research and/or troubleshooting 😉

Cheers,

Enrico