RFC 4856 - Registration of Media Type audio/PCMA and audio/PCMU RFC 5391 - RTP Payload Format for ITU-T Recommendation G.711.1 (PCMA-WB and PCMU-WB)
RFC 4856 - 미디어 타입 audio/PCMA and audio/PCMU의 등록 RFC 5391 - ITU-T 권고 G.711.1를 위한 RTP Payload Format (PCMA-WB and PCMU-WB)