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進入《TAIPEI TIMES》Backups used as cables to Matsu fail
A screen at a news conference at the Ministry of Digital Affairs in Taipei shows a map of undersea cables between Taiwan proper and Lienchiang County. Photo: Ann Wang, Reuters
NATURAL INTERRUPTION: As cables deteriorate, core wires snap in progression along the cable, which does not happen if they are hit by an anchor, an official said
By Shelley Shan / Staff reporter
Chunghwa Telecom Co （中華電信） immediately switched to a microwave backup system to maintain communications between Taiwan proper and Lienchiang County （Matsu） after two undersea cables malfunctioned due to natural deterioration, the Ministry of Digital Affairs told an emergency news conference yesterday morning.
Two submarine cables connecting Taiwan proper and the outlying county — the No. 2 and No. 3 Taiwan-Matsu cables — were disconnected early yesterday morning and on Wednesday last week respectively, the nation’s largest telecom said.
“After receiving the report that the No. 2 cable had failed, the ministry asked Chunghwa Telecom to immediately activate a microwave backup system, with the procedure completed within an hour,” Deputy Minister of Digital Affairs Chiueh Her-ming （闕河鳴） said.
“The microwave system can provide a maximum bandwidth of 12.6 gigabits per second [Gbps], which is higher than Matsu’s peak traffic volume of 9.5Gbps on weekdays and 8Gbps during the Lunar New Year holiday,” Chiueh said.
Government agencies, banks and hospitals in Lienchiang County would have priority access to ensure the continuation of services to residents on the islands, he said.
The ministry has installed in the county eight low-Earth orbit satellite dishes and one medium-Earth orbit satellite dish as backup to the microwave system, he said.
Chiueh ruled out that the cables were damaged by ships.
The cables malfunctioned because of natural deterioration, he said, adding that both should be fixed by the end of next month, if weather and sea conditions permit.
A temporary measure using spare core wires has re-established connection via the No. 2 cable, Chunghwa Telecom said.
It switched services from the microwave system back to the No. 2 cable at 11:40am yesterday, it said.
“As cables deteriorate, core wires snap in progression along the cable, which does not happen if they are hit by an anchor dragged by a ship or severed by other human-caused means,” he said.
“If damage to a cable is caused by human activity, there is no telling how long it would take to fix,” he said.
Chunghwa Telecom said that the No. 3 cable was disconnected on Wednesday last week, possibly because of natural deterioration, as well as a strong current.
It switched services to the No. 2 cable and activated a microwave backup system, it said.
There were no signs that human activity was involved in the No. 3 cable being disconnected, with no ships in the area showing suspicious behavior, it said.
It would send an alert via the automatic identification system to ships entering areas near submarine cables to leave the area immediately, and to refrain from dropping anchor or fishing.
The Coast Guard Administration in a statement said that it had reviewed radar data from Wednesday last week and early yesterday morning, finding no evidence of suspicious behavior by ships.
It has relayed the information to Chunghwa Telecom, it added.
Taiwan has recorded four issues with submarine cables this month alone, compared with three incidents in the whole of last year and three in 2023, Chiueh said.
“There has been an increase in incidents of submarine cables being cut by fishing boat and freighter activity in the past two years,” he said. “As such, the Executive Yuan has listed 10 domestic submarine cables as key infrastructure, including the ones connecting Taiwan and Lienchiang. They would be maintained using government resources.”
The ministry is to help fund a fourth submarine cable to be built by Chunghwa Telecom, with work to be completed by June next year, he said.
International cables were built by multiple stakeholders in Taiwan and overseas, with maintenance costs being shared among them, Department of Communications and Cyberresilience Director-General Niu Hsin-ren （牛信仁） said.
Deputy Minister of Digital Affairs Lin Yi-jing （林宜敬） said that the ministry had budgeted NT$530 million （US$16.17 million） to shore up Taiwan’s digital resilience by building non-synchronous orbit satellite communications networks, submarine cable landing stations and a microwave communications network.
However, about 56 percent of the funding has been eliminated because of a comprehensive budget cut by the Legislative Yuan, Lin said.
新聞來源：TAIPEI TIMES
