MF275 voice shows no signal.

jcntjcnt United StatesPosts: 3 ✭✭

Greetings,

I just got MF275 for a test. Data, using my cellular phone ATT SIM card works great, but there is no voice.

Question: Do MF275 and all its successors like MF279 and newer MF2XX require special arrangements from cellular operator to enable voice? I tested similar functionality in Verizon devices and none required anything special. Data and voice work out of the box in connected device and mobile phone.

Thank you!

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