Awọn ẹgbẹ igbohunsafẹfẹ ibaraẹnisọrọ ti awọn oniṣẹ telecom pataki ni awọn orilẹ-ede pupọ ni ayika agbaye-2

6. India
Awọn oniṣẹ pataki meje wa ni India (laisi awọn oniṣẹ foju), eyun Bharat Sanchar Nigam Limited (BSNL), Bharti Airtel, Mahanagar Telephone Nigam Limited (MTNL), Reliance Communications (RCOM), Reliance Jio Infocomm (Jie), Tata Teleservices, ati Vodafone Idea.
Awọn ẹgbẹ igbohunsafẹfẹ GSM meji wa, eyun DCS1800 ati EGSM900.
Awọn ẹgbẹ igbohunsafẹfẹ WCDMA meji wa, eyun Band 1 ati Band 8.
Awọn ẹgbẹ igbohunsafẹfẹ LTE 6 wa, eyun: Band 1, Band 3, Band 5, Band 8, Band 40, ati Band 41.

7. Canada
Apapọ awọn oniṣẹ pataki 10 wa ni Ilu Kanada (laisi awọn oniṣẹ foju), eyun: Bell Mobility/BCE, Fido Solutions, Rogers Wireless, Telus, Vid é otron, Freedom Mobile, Bell MTS, Eastlink, Ice Wireless, SaskTel.
Awọn ẹgbẹ igbohunsafẹfẹ GSM meji wa, eyun GSM850 ati PCS1900.
Awọn ẹgbẹ igbohunsafẹfẹ WCDMA mẹta wa, eyun Band 2, Band 4, ati Band 5.
Awọn ẹgbẹ igbohunsafẹfẹ CDMA2000 meji wa, eyun BC0 ati BC1.
Awọn ẹgbẹ igbohunsafẹfẹ LTE 9 wa, eyun: Band 2, Band 4, Band 5, Band 7, Band 12, Band 17, Band 29, Band 42, ati Band 66.

8. Brazil
Awọn oniṣẹ pataki mẹfa wa ni Ilu Brazil (laisi awọn oniṣẹ foju), eyun: Claro, Nextel, Oi, Telef ô nica Brasil, Algar Telecom, ati TIM Brasil.
Awọn ẹgbẹ igbohunsafẹfẹ GSM mẹrin wa, eyun: DCS1800, EGSM900, GSM850, ati PCS1900.
Awọn ẹgbẹ igbohunsafẹfẹ WCDMA mẹrin wa, eyun: Band 1, Band 2, Band 5, ati Band 8.
Awọn ẹgbẹ igbohunsafẹfẹ LTE mẹrin wa, eyun: Band 1, Band 3, Band 7, ati Band 28.

9. Australia
Awọn oniṣẹ akọkọ mẹta wa ni Australia (laisi awọn oniṣẹ foju), eyun Optus, Telstra, ati Vodafone.
Awọn ẹgbẹ igbohunsafẹfẹ GSM meji wa, eyun DCS1800 ati EGSM900.
Awọn ẹgbẹ igbohunsafẹfẹ WCDMA mẹta wa, eyun: Band 1, Band 5, ati Band 8.
Awọn ẹgbẹ igbohunsafẹfẹ LTE 7 wa, eyun: Band 1, Band 3, Band 5, Band 7, Band 8, Band 28, ati Band 40.

 

10. South Korea
Awọn oniṣẹ akọkọ mẹta wa ni South Korea (laisi awọn oniṣẹ foju), eyun SK Telecom, KT, ati LG UPlus.
Ẹgbẹ igbohunsafẹfẹ WCDMA kan wa, eyiti o jẹ Band 1.
Awọn ẹgbẹ igbohunsafẹfẹ CDMA2000 meji wa, eyun BC0 ati BC4.
Awọn ẹgbẹ igbohunsafẹfẹ LTE 5 wa, eyun: Band 1, Band 3, Band 5, Band 7, Band 8

11.Frequency band pinpin map ti pataki awọn oniṣẹ ni North America

Lab Idanwo BTF jẹ ile-iṣẹ idanwo ti o jẹ ifọwọsi nipasẹ Iṣẹ Ifọwọsi Orilẹ-ede China fun Igbelewọn Ibamu (CNAS), nọmba: L17568. Lẹhin awọn ọdun ti idagbasoke, BTF ni yàrá ibaramu itanna eletiriki, yàrá ibaraẹnisọrọ alailowaya, yàrá SAR, yàrá ailewu, yàrá igbẹkẹle, yàrá idanwo batiri, idanwo kemikali ati awọn ile-iṣẹ miiran. Ni ibaramu itanna pipe, igbohunsafẹfẹ redio, aabo ọja, igbẹkẹle ayika, itupalẹ ikuna ohun elo, ROHS / REACH ati awọn agbara idanwo miiran. Lab Idanwo BTF ti ni ipese pẹlu alamọdaju ati awọn ohun elo idanwo pipe, ẹgbẹ ti o ni iriri ti idanwo ati awọn amoye iwe-ẹri, ati agbara lati yanju ọpọlọpọ awọn idanwo eka ati awọn iṣoro iwe-ẹri. A ni ibamu si awọn ipilẹ itọnisọna ti “iṣododo, aiṣedeede, deede, ati lile” ati ni muna tẹle awọn ibeere ti idanwo ISO/IEC 17025 ati eto iṣakoso yàrá isọdiwọn fun iṣakoso imọ-jinlẹ. A ni ileri lati pese awọn onibara pẹlu iṣẹ ti o ga julọ. Ti o ba ni ibeere eyikeyi, jọwọ lero free lati kan si wa nigbakugba.