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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and equipment (Details) | 12 Months Ended
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Dec. 31, 2021
Buildings | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 15 years
Buildings | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 50 years
Leasehold improvements | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 2 years
Leasehold improvements | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 15 years
Switching equipment | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 3 years
Switching equipment | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 15 years
Telegraph, telex and data communication equipment | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 5 years
Telegraph, telex and data communication equipment | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 15 years
Transmission installation and equipment | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 3 years
Transmission installation and equipment | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 30 years
Satellite, earth station and equipment | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 3 years
Satellite, earth station and equipment | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 20 years
Cable network | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 5 years
Cable network | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 25 years
Power supply | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 3 years
Power supply | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 20 years
Data processing equipment | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 3 years
Data processing equipment | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 20 years
Vehicles | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 4 years
Vehicles | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 8 years
Other telecommunication peripherals |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 5 years
Office equipment | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 2 years
Office equipment | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 5 years
Other equipment | Minimum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 2 years
Other equipment | Maximum |
PROPERTY, PLANT AND EQUIPMENT, NET |
Estimated useful lives of property and equipment | 5 years

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- Definition The useful life, measured as period of time, used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 73 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_c&doctype=Standard -URIDate 2021-03-24 + Details
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