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Continue to ChatKPN y China Mobile completan prueba de roaming internacional VoLTE https://www.telesemana.com/blog/2014/10/27/kpn-y-china-mobile-completan-prueba-de-roaming-internacional-volte/
KPN y China Mobile completan prueba de roaming internacional VoLTE https://www.telesemana.com/blog/2014/10/27/kpn-y-china-mobile-completan-prueba-de-roaming-internacional-volte/