Voice Over IP
Alaw and µlaw
Asterisk 8 and later on Debian
Some Asterisk tips and tricks.
Asterisk name and location lookup AGI
Display name or location of caller on your SIP phones. Comes with more then 20000 area codes from all over the world.
No in depth explanation of decibels. Just some lookup tables.
Freedom Internet VoIP
An Asterisk SIP trunk setup with multiple remote IP addresses.
Import contacts to friends.db.
Lookup Country and Area code
Panasonic KX-HDV130 SIP Phone
Some of my experiences with the Panasonic KX-HDV130 SIP Phone.