发明名称 |
PCM subcode communications technique between a regional radio transmitter/receiver and a regional switching center |
摘要 |
In a radiotelephone network, processing steps previously applied to digital voice transmissions received by a regional radio transmitter/receiver but not applied to analog voice transmissions received by the transmitter/receiver are applied to such analog voice transmissions at the transmitter/receiver itself such that analog voice transmissions and digital voice transmissions may be transmitted identically between the regional radio transmitter/receiver and a regional switching center. In particular, a digital speech encoder/compressor and a corresponding digital speech decoder/decompressor (together referred to as a codec) provided at remote transmitter/receivers and the regional switching center are also provided at the regional radio transmitter/receiver so as to apply the same processing to analog voice transmissions received from the remote transmitter/receivers as is applied to digital voice transmissions at the remote transmitter/receivers.
|
申请公布号 |
US5515397(A) |
申请公布日期 |
1996.05.07 |
申请号 |
US19940203610 |
申请日期 |
1994.02.28 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON |
发明人 |
WIOREK, JONAS |
分类号 |
H04W88/18;(IPC1-7):H04B14/04 |
主分类号 |
H04W88/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|