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Band class 27?


Destroyallcubes
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What is band class 27? I have never seen it before? 

 

https://www.dropbox.com/s/mhedj2vbsldkljh/Screenshot_2014-01-02-18-10-39.png

 

It was seen on the EV-DO engineering screen. Data was refusing to work, and It kept saying it was sprint service

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That's an invalid band class. CDMA band classes only go up to 21 (starting from 0). UMTS/LTE devices do something similar by identifying as band 0 (which is an invalid band number).

 

Correct me if I'm wrong, but the "out of index" error might refer to the fact that it's trying a band class ID that doesn't exist and trying to reference a CDMA channel number to it?

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Lower 850MHz band for Americas except the US

 

Carriers across the Americas (except the US) have spectrum on the SMR (specialized mobile radio) band and want to migrate from iDEN technology to LTE. Currently, the 3GPP is working on developing the band specification and will approve it as LTE band class 27. To be clear, this has nothing to do with the Cellular 850 spectrum, as these frequencies are below it. These were reserved quite some time ago for SMR usage, and have never been used for anything else..... I found that on http://www.extremetech.com/mobile/135045-what-is-lte-advanced/5 . How did you get on that band if it's invalid lol?

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Lower 850MHz band for Americas except the US

 

Carriers across the Americas (except the US) have spectrum on the SMR (specialized mobile radio) band and want to migrate from iDEN technology to LTE. Currently, the 3GPP is working on developing the band specification and will approve it as LTE band class 27. To be clear, this has nothing to do with the Cellular 850 spectrum, as these frequencies are below it. These were reserved quite some time ago for SMR usage, and have never been used for anything else..... I found that on http://www.extremetech.com/mobile/135045-what-is-lte-advanced/5 . How did you get on that band if it's invalid lol?

I saw that but It didn't make sense, I did a full reboot, and It disappeared. I was donating plasma and my data stopped working , so I checked the Engineering screens to check to see if I saw something similar to Digi's Channel 100, and saw that...Not sure How it happened though. It was perfectly fine on signal check too!

 

 

That's an invalid band class. CDMA band classes only go up to 21 (starting from 0). UMTS/LTE devices do something similar by identifying as band 0 (which is an invalid band number).

 

Correct me if I'm wrong, but the "out of index" error might refer to the fact that it's trying a band class ID that doesn't exist and trying to reference a CDMA channel number to it?

Yes What I thought, but it is a band class In south/rest of North america. Thought possibly a mistake or software error

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Yes What I thought, but it is a band class In south/rest of North america. Thought possibly a mistake or software error

It is in terms of 3GPP band classes, not 3GPP2 band classes. CDMA band classes are defined by the 3GPP2, and they go from 0 to 21. 3GPP band class 27's equivalent band class in 3GPP2 is band class 10. 3GPP2 band class 27 doesn't exist (yet).

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Typically with CDMA, they are referred to as "Band Class" whereas with LTE, they are commonly referred to as just "Band."

 

For instance with SMR, it is CDMA "Band Class 10", whereas it is LTE "Band 26."

 

Referencing them only this way will help people to know which actual band/technology you may be referring to and help eliminate confusion.

 

Robert via Samsung Note 8.0 using Tapatalk Pro

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