Linphone in 14.04 missing build dependency: libgsm1-dev. That's why it doesn't support GSM codec.
Official PPA has updated version built with GSM: https://launchpad.net/~linphone/+archive/release
Linphone in 14.04 missing build dependency: libgsm1-dev. That's why it doesn't support GSM codec.
Official PPA has updated version built with GSM: /launchpad. net/~linphone/ +archive/ release
https:/