US 12,328,415 B2
Telephone relay device, teleconference server, teleconference system, telephone relay method, and program
Tatsuhiko Abe, Kanagawa (JP)
Assigned to NEC Platforms, Ltd., Kanagawa (JP)
Appl. No. 18/036,616
Filed by NEC Platforms, Ltd., Kawasaki (JP)
PCT Filed Oct. 15, 2021, PCT No. PCT/JP2021/038279
§ 371(c)(1), (2) Date May 11, 2023,
PCT Pub. No. WO2022/107520, PCT Pub. Date May 27, 2022.
Claims priority of application No. 2020-193385 (JP), filed on Nov. 20, 2020.
Prior Publication US 2023/0421700 A1, Dec. 28, 2023
Int. Cl. H04M 3/56 (2006.01)
CPC H04M 3/566 (2013.01) [H04M 3/568 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A telephone relay device being communicably connected to a teleconference server configured to relay an audio call between communication terminals participating in a teleconference via an Internet Protocol (IP) network, the telephone relay device comprising:
a participation request unit configured to request the teleconference server to permit participation in the teleconference in response to receiving an audio quality reduction notification indicating that audio quality of the audio call between the communication terminals becomes less than a predetermined level, from the teleconference server;
a call making unit configured to make a call to a telephone terminal associated with the communication terminal in response to being permitted to participate in the teleconference; and
a call relay unit configured to relay an audio call of the teleconference between the telephone terminal and the teleconference server in response to receiving a response to the call from the telephone terminal.