The real-time broadcast was made available in several Asian countries, including Korea, China, Taiwan and Indonesia, via submarine cable, in partnership with Cantonese information technology giant Pacific Century CyberWorks.

PCCW is the largest information and communication group and the holding company of HKT Group Holdings Limited.

The service flaunted a considerably short time of latency, allowing only three to five seconds of time difference between the actual concert and the live broadcast. No recording problems were reported during the two-hour concert.

The Stellar concert wasn't the first K-pop concert to be simultaneously aired on Olleh TV and offshore. In December 2015, the company broadcast the real-time concert of K-pop boy band BTOB, raking in multiple tens of millions of won in profit.

In addition to the overseas live broadcasts, KT is preparing a 360-degree virtual reality service for overseas viewers. The VR service will present three hit songs of Stellar: "Vibrato," "Sting" and "Marionette," to Olleh TV customers as soon as the Korean mobile carrier completes editing procedures.

KT plans to continue providing K-pop concerts on a real-time basis simultaneously here and overseas, calling the service a way to differentiate its service from those of its rivals.

The mobile operator has attempted to bring several K-pop managements and foreign tech firms to the negotiation table.

"Recently, China's Tencent bought the rights to broadcast K-pop idol concerts in China for 500 million won ($434,782) and earned 5 billion won in profit," a market observer said, pointing to the emergence of "a whole new market." (Yonhap)