종합 정보 통신망(ISDN)에서 다수의 음성과 데이터 채널을 동시에 전송할 수 있도록 설계된 표준 통신 서비스 규격.
A standardized telecommunications service level within the Integrated Services Digital Network (ISDN) designed for large organizations to carry multiple voice and data transmissions simultaneously.
예문:
"The office upgraded to a PRI line to handle up to thirty concurrent voice calls through their PBX system."
"A PRI connection offers higher reliability and faster signaling compared to traditional analog trunks."
"Technicians are troubleshooting the PRI gateway to restore the digital communication link between the branches."