Send the following on WhatsApp
Continue to ChatVoz sobre LTE: best effort vs. carrier grade https://www.telesemana.com/blog/2014/01/08/voz-sobre-lte-best-effort-vs-carrier-grade/
Voz sobre LTE: best effort vs. carrier grade https://www.telesemana.com/blog/2014/01/08/voz-sobre-lte-best-effort-vs-carrier-grade/