I have no background in telephony but probably need to use a PBX.
FreeSwitch
was recommended by a casual contact so I would like to start first by
setting up a small test.
I have a SPA3102 attached to the box running
FS and to a ordinary phone line. I registered SPA in
conf/directory/default/line1.xml and it works ok but I can't get
caller id numbers from incoming calls. All FS sees is "line1" which is
found in file line1.xml as <variable name="effective_caller_id_number" value="line1"/>.