【資料名稱】：DTM Feature Trial

【資料作者】：愛立信

【資料日期】：2011

【資料語言】：中文

【資料格式】：PPT

【資料目錄和簡介】：

Dual Transfer Mode (DTM) is a protocol based on the GSM standard that allows simultaneous transfer of CS and PS data over the same radio channel .

In DTM, the MS has a CS connection to the network and has simultaneously allocated radio resources on one or more Packet Data Channels (PDCHs), for example when a speech call is ongoing at the same time as an e-mail synchronization is performed.

The CS connection and the allocation of radio resources on PDCHs are coordinated by the network. The number of timeslots that can be allocated for DTM to be used for a CS and a PS connection, the relative order and the placement of the timeslots must comply with the DTM multislot class supported by the MS