GUI is very fast on a Raspi 2. Might be faster than 2.11 / 11 on an Atom thin client. Impressed after being disappointed by GUI 12 / Asterisk 11 on Debian Wheezy.
Any way chan_mobile.so can be compiled into the next image iteration? chan_mobile.conf is in /etc/asterisk/ and I edited it to update pertinent info but when you 'module load chan_mobile.so' in * cli, it says module does not exist.
FYI, I tried to compile chan_dongle.so and it fails to make it past the make stage. Judging by a few posts of information out on the interwebs, you can compile dongle for * 13 in Centos but no information about Debian or Ubuntu compilation out there that I found.
Edit: I was later able to get both chan_mobile and chan_dongle compiled.
To add chan_mobile.so, I recompiled asterisk using ./configure --with-bluetooth. I am having trouble getting the bluetooth adapter (a perhaps illegal knockoff clone ) to connect to my phone in Raspian although when I do a 'mobile search' in CLI my phone pops up. I have to try a name brand adapter to know if I have a permanent issue.
For chan_dongle, I used a patch cloned from here:
https://github.com/oleg-krv/asterisk-chan-dongle.git. Once I cloned into the patched compilation files, I executed ' aclocal && autoconf && automake -a' followed by './configure --disable-debug --enable-apps --enable-manager --with-asterisk=/usr/src/asterisk-13.7.2/include' then 'make && make install'. Don't forget to copy the dongle.conf file from the /etc subdirectory in the clone to /etc/asterisk and you need to install wvdial and usb_modeswitch. Of course you need to provide chmod permissions to the ttyUSBx devices in /dev.
Edit 3-7-2016: Tried up to 4 dongles with the Pi and a powered USB hub today. Discovered any more than two dongles brings the whole system crashing probably because the Pi's ethernet adapter is also on the USB line with the communications overload of the USB pipe too much.