# oFono

There is also an oFono backend, "ofono".  This was the first backend
developed but has been superceded by the ModemManager backend so it
may suffer from a lack of attention.

The ofono backend depends on oFono Modem objects being present on
D-Bus.  To run oFono with useful output:

    sudo OFONO_AT_DEBUG=1 ofonod -n -d

The test programs within the [oFono source
tree](https://git.kernel.org/pub/scm/network/ofono/ofono.git) are
useful to bring up a modem to a suitable state.  For example:

    cd $OFONO_SOURCE/test
    ./list-modems
    ./enable-modem /sim7100
    ./online-modem /sim7100

Then run Calls:

    /usr/bin/gnome-calls -p ofono


## Phonesim

One can also make use of the oFono modem simulator, phonesim (in the
ofono-phonesim package in Debian):

    ofono-phonesim -p 12345 -gui /usr/local/share/phonesim/default.xml

then, ensuring /etc/ofono/phonesim.conf has appropriate contents like:

    [phonesim]
    Address=127.0.0.1
    Port=12345

run oFono as above, then:

    cd $OFONO_SOURCE/test
    ./enable-modem /phonesim
    ./online-modem /phonesim

And again run Calls.