Digium announced today the release of Asterisk version 1.4.21. The release is a “regular bug fix” for the voip telephone system and is available, as always, free from the asterisk.org website.
Asterisk is free, open source software provided under the GNU General Public License (GPL). Asterisk is the most popular open source software available, with the Asterisk Community being the top influencer in VoIP.
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