[ NoAccessorMethod ]
public abstract GdbusModemVoice modem_voice { owned get; set; }
The GdbusModemVoice instance corresponding to the D-Bus interface <link linkend="gdbus-interface-org-freedesktop-ModemManager1-Modem-Voice.
top_of_page">org.freedesktop.ModemManager1.Modem.Voice</link>, if any.
Connect to the notify signal to get informed of property changes.