Thank you for your reply Ocar, Yes we are using S50 conference feature. Phones are Yealink T27G & Cisco SPA502g. Codecs are set to G.711. We checked other codecs but the problem still remains.
Relates to: Yeastar S50 Firmware Version: 184.108.40.206 After upgrade to 220.127.116.11 I noticed a very poor voice quality on conference. The voice is distorted, broken and choppy. The problem appears ...