Asterisk uses "echo cancellation" to enhance audio. EC can be done in
soft- or hardware. All major card manufacturers have variants of their
cards with hardware echo cancellation support. Searching the internet
gives a lot of information about this topic.
If you install a Sangoma card without HWEC, then you do get the default
software canceler. Depending on your needs, switching to the OSLEC
canceler might or might not be a better choice. Generally, a card with
HWEC gives the best results, especially when you also have a lot of
facsimile messages.
jg
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
New to Asterisk? Join us for a live introductory webinar every Thurs:
http://www.asterisk.org/hello
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
