Voice Over IP

• Alsamixer
  This may be handy if you want to run VoIP software on a non-GUI box.
• Alaw and µlaw audio compression.
• Asterisk
• Asterisk name and location lookup AGI
  Display name or location of caller on your SIP phones. Comes with more than 20000 area codes from all over the world.
• dB Tables
  No in depth explanation of decibels. Just some lookup tables.
• Freedom Internet VoIP
  An Asterisk SIP trunk setup with multiple remote IP addresses.
  Note: This setup uses sip.conf. PjSip requires an other setup.
• Freedom Internet PjSip
  This Asterisk setup uses chan_pjsip / pjsip.conf instead of chan_sip / sip.conf.
• Linphone
  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.
• Session Initiation Protocol
• STIR/SHAKEN
  A way to combat caller ID spoofing.