Federal Communications Commission (FCC) ea United States e hloka hore ho qala ka la 5 Tšitoe 2023, lisebelisoa tsohle tse tšoaroang ka letsoho li tlameha ho fihlela litlhoko tsa maemo a ANSI C63.19-2019 (ke hore, maemo a HAC 2019). Ha ho bapisoa le mofuta oa khale oa ANSI C63.19-2011 (HAC 2011), phapang e kholo lipakeng tsa tse peli e mabapi le tlatsetso ea litlhoko tsa tlhahlobo ea taolo ea molumo maemong a HAC 2019. Lintho tsa tlhahlobo li kenyelletsa haholo ho khopamisa, karabelo ea khafetsa, le phaello ea nako. Litlhoko tse amehang le mekhoa ea tlhahlobo li hloka ho lebisa ho ANSI/TIA-5050-2018 e tloaelehileng.
US FCC e fane ka 285076 D05 HAC Waiver DA 23-914 v01 exemption regulation ka la 29 Loetse, 2023, ka nako ea kholofalo ea lilemo tse 2 ho qala ka la 5 Tšitoe 2023. Ho hlokahala hore likopo tse ncha tsa setifikeiti li lumellane le litlhoko tsa 28507 D04 Volume Control v02 kapa ka kopanelo le tokomane ea ts'ebetso ea nakoana ea ho lokolloa KDB285076 D05 HAC Waiver DA 23-914 v01 tlasa 285076 D04 Taolo ea Bolumo v02. Tokollo ena e lumella lisebelisoa tse ts'oaroang ka letsoho tse nkang setifikeiti ho theola litlhoko tse itseng tsa tlhahlobo ho latela mekhoa ea tlhahlobo ea ANSI/TIA-5050-2018 ho feta tlhahlobo ea Volume Control.
Bakeng sa tlhahlobo ea Volume Control, litlhoko tse khethehileng tsa ho lokolloa ke tse latelang:
(1) Bakeng sa ho lekola likhoutu tsa narrowband le Broadband tsa lits'ebeletso tsa mohala tsa marang-rang (tse kang AMR NB, AMR WB, EVS NB, EVS WB, VoWiFi, joalo-joalo), litlhoko ke tse latelang:
1) Tlas'a khatello ea 2N, mokopi o khetha sekhahla sa khouto e patisaneng le sekhahla sa khouto ea Broadband. Ka molumo o itseng, bakeng sa lits'ebeletso tsohle tsa lentsoe, ts'ebetso ea sehlopha, le litlhophiso tsa boema-fofane, phaello ea seboka e tlameha ho ba ≥ 6dB, 'me ho sotha le ho arabela hangata ho tlameha ho finyella litlhoko tse tloaelehileng.
2) Tlas'a khatello ea 8N, mokopi o khetha sekhahla sa khouto e tšesaane le sekhahla sa khouto ea Broadband, 'me bakeng sa lits'ebeletso tsohle tsa lentsoe, ts'ebetso ea lihlopha le litlhophiso tsa boema-fofane ka molumo o le mong, phaello ea kopano e tlameha ho ba ≥ 6dB, ho fapana le maemo ≥. 18dB. Khopamiso le karabelo ea khafetsa li khahlametsa litlhoko tsa maemo.
(2) Bakeng sa li-encodings tse ling tsa narrowband le broadband tse sa boleloang nthong (1), phaello ea seboka e lokela ho ba ≥ 6dB tlas'a maemo a khatello ea 2N le 8N, empa ha ho hlokahale ho leka ho khopama le ho arabela khafetsa.
(3) Bakeng sa mekhoa e meng ea khouto e sa boleloang nthong (1) (e kang SWB, FB, OTT, joalo-joalo), ha ho hlokahale hore e finyelle litlhoko tsa ANSI / TIA-5050-2018.
Kamora la 5 Tšitoe 2025, haeba FCC e sa fane ka litokomane tse ling, tlhahlobo ea Volume Control e tla etsoa ka thata ho latela litlhoko tsa ANSI/TIA-5050-2018.
BTF Testing Lab e na le bokhoni ba tlhahlobo ea setifikeiti sa HAC 2019, ho kenyeletsoa tšitiso ea RF Emission RF, tlhahlobo ea matšoao a T-Coil, le litlhoko tsa taolo ea bophahamo ba Bolumo.
Nako ea poso: Jan-04-2024
