公开(公告)号：JPH11168512A

公开(公告)日：1999-06-22

申请号：JP25384598

申请日：1998-09-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DUNCAN THOMAS ,  GITLIN RICHARD DENNIS ,  LAPORTA THOMAS F ,  MURAKAMI KAZUTAKA ,  SABNANI KRISHAN KUMAR ,  SAWKAR ANIL S ,  SMITH DAVID E

IPC: H04M3/00 ,  H04B7/26 ,  H04L12/66 ,  H04Q3/00 ,  H04W88/18 ,  H04L12/28 ,  H04L12/56

Abstract: PROBLEM TO BE SOLVED: To efficiently use a system band without impairing the quality of a sound signal by converting digital information emitted from a mobile object communication network at a first data rate into a second data rate required in a position where an ATM exchange is connected to a public switched network for the first time. SOLUTION: A mobile terminal 10 calls a cable system telephone set S1 in the public switched network 200. The signal of a base station 20 having the best S/N is selected by a frame selector 120 among the signals of plural base stations receiving digital data of the bit rate of 8 kbps in the mobile terminal 10. A mobile object telephone switching station 100 becomes an initial connection procedure mode. When a line 515 which can directly connected to the public switched network 200 exists, a vocoder 130 converts the bit rate from 8k to 64 kbps from the mobile terminal 10 and transmits it. When a connection opposite party is the ATM exchange 150, a connection procedure is advanced with 8 kbps as it is and the vocoder 153 of the final ATM exchange 150-N executes the conversion of 8 k to 64 kbps.

公开(公告)号：CA2244814A1

公开(公告)日：1999-03-09

申请号：CA2244814

申请日：1998-08-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LAPORTA THOMAS F ,  SMITH DAVID E ,  SABNANI KRISHAN KUMAR ,  DUNCAN THOMAS ,  MURAKAMI KAZUTAKA ,  SAWKAR ANIL S ,  GITLIN RICHARD DENNIS

IPC: H04M3/00 ,  H04B7/26 ,  H04L12/66 ,  H04Q3/00 ,  H04W88/18 ,  H04Q7/24 ,  H04L12/56

Abstract: A telecommunications system is arranged to efficiently route digital information from a mobile network to a Public Switched Telephone Network (PSTN) and vice versa by interposing a packet network between the mobile network and PSTN so that digital information originating from the wireless network at a first data rate may be forwarded over the packet network at that rate and then sent over a direct connection from the packet network to the PSTN at a second data rate expected by the PSTN. In this way the conversion of the digital information from the first to the second data rate is performed only when needed, i.e., at the ATM switch connected to the PSTN.

公开(公告)号：CA2244814C

公开(公告)日：2001-10-23

申请号：CA2244814

申请日：1998-08-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SABNANI KRISHAN KUMAR ,  DUNCAN THOMAS ,  GITLIN RICHARD DENNIS ,  SMITH DAVID E ,  LAPORTA THOMAS F ,  MURAKAMI KAZUTAKA ,  SAWKAR ANIL S

IPC: H04M3/00 ,  H04B7/26 ,  H04L12/66 ,  H04Q3/00 ,  H04W88/18 ,  H04Q7/24 ,  H04L12/56

Abstract: A telecommunications system is arranged to efficiently route digital information from a mobile network to a Public Switched Telephone Network (PSTN) and vice versa by interposing a packet network between the mobile network and PSTN so that digital information originating from the wireless network at a first data rate may be forwarded over the packet network at that rate and then sent over a direct connection from the packet network to the PSTN at a second data rate expected by the PSTN. In this way the conversion of the digital information from the first to the second data rate is performed only when needed, i.e., at the ATM switch connected to the PSTN.