【資料名稱】：TrFO and TFO in M-MGw R4

【資料作者】：愛立信

【資料日期】：08年

【資料語言】：英文

【資料格式】：PPT

【資料目錄和簡介】：

TFO
TFO is based on inband signaling, which means that TFO can perform codec negotiation between different networks
TFO requires always 64 kbps transmission path
TFO is valid mainly for TDM transport, but is supported also for PCM coded speech on ATM and IP transport
TrFO
TrFO is based on Out of Band Transcoder Control (OoBTC) negotiation, i.e. its usage is limited mainly to one CN only
TrFO link requires bandwidth only for compressed speech (+ protocol headers), i.e. less bandwidth is required
TrFO is valid for ATM and IP transport