The Federal Telecommunications Institute of Mexico modified Technical Provisions in IFT-011-2017: Technical Specifications of Mobile Terminal Equipment that can make use of the radioelectric spectrum or be connected to telecommunications networks. Part 2. Mobile Terminal Equipment operating in the 700 MHz, 800 MHz, 850 MHz, 1900 MHz, 1700 MHz / 2100 MHz and / or 2500 MHz bands. 

As lots of smartphones can now operate 4G using Band 28 (700 MHz) and have VoLTE functionality, it was decided to carry out a public consultation on inclusion of the Operator’s parameters for the VoLTE function for voice calls in IFT-011-2017. This proposal received a significant number of votes and provisions of IFT-011-2017 were added with requirements to the VoLTE functionality. Thus, when devices support at least the 4G technology standard and initially have all the components that allow the automatic establishment of voice calls through VoLTE functionality, in any of the operating frequency bands intended for mobile service, this functionality must be enabled and active for the user.

Modification of the IFT-011-20127 with requirements to the VoLTE function and relevant test methods was published in February 2021 and became effective from the middle of August 2021. 

Please, note that certificates of compliance issued prior these modifications will remain in force until their expiration date and will not be subject to control. 

If devices do not have all the components that allow the automatic establishment of voice calls through the VoLTE functionality in any of the Operating frequency bands destined for the mobile service, it must be indicated on the mark or label.

The full text of the modification you can here.

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The information has been prepared by the GMA Consult Group team.‍

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