Can the Electron be used for GSM voice applications?

Hardware
#1

Hi. Can the Electron be used for GSM voice applications without a separate breakout board? It appears that the ublox module supports that but I am not certain. I am planning to build a DIY cell phone and was wondering if the Electron has all the GSM hardware needed for that.

Thanks,
Mark

Voice message using photon/electron
#2

I’m not sure if all the pins required for voice application is available on the electron to achieve this.