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Howto setup Asterisk behind NAT
This HOWTO assumes that your FreePBX system is sitting behind a NATed firewall with no direct connection to the outside world and it is NOT in the DMZ zone. If you have your system facing outside, or have used Mapped IP addresses or other techniques, then it is assumed that you have adequate knowledge to […]
Installing the Free G729 Codec for Asterisk
This tutorial will let you install the G729 Codec on an Asterisk installation in under 5 minutes. Navigate to the codecs directory: cd /usr/lib/asterisk/modules Download the codec Codecs are provided as binary .so files, you can find the archive at http://asterisk.hosting.lv/#bin Take care of the following when picking up one of the files, they depend […]
Fix Asterisk 1 way Audio Issues
NAT issues Perhaps the most common problem encountered is one-way audio, and 99% of the time, this is caused by a NAT firewall. So here are the steps you must take to configure the PBX to work behind a NAT firewall. Make sure you have a resolvable address on the Internet. If you don’t want […]