@misc{rfc4867, series = {Request for Comments}, number = 4867, howpublished = {RFC 4867}, publisher = {RFC Editor}, doi = {10.17487/RFC4867}, url = {https://www.rfc-editor.org/info/rfc4867}, author = {Johan Sjoberg and Ari Lakaniemi and Magnus Westerlund and Qiaobing Xie}, title = {{RTP Payload Format and File Storage Format for the Adaptive Multi-Rate (AMR) and Adaptive Multi-Rate Wideband (AMR-WB) Audio Codecs}}, pagetotal = 59, year = 2007, month = apr, abstract = {This document specifies a Real-time Transport Protocol (RTP) payload format to be used for Adaptive Multi-Rate (AMR) and Adaptive Multi-Rate Wideband (AMR-WB) encoded speech signals. The payload format is designed to be able to interoperate with existing AMR and AMR-WB transport formats on non-IP networks. In addition, a file format is specified for transport of AMR and AMR-WB speech data in storage mode applications such as email. Two separate media type registrations are included, one for AMR and one for AMR-WB, specifying use of both the RTP payload format and the storage format. This document obsoletes RFC 3267. {[}STANDARDS-TRACK{]}}, }