ISSUE SERVER DELL + CENTOS > 6

Issue : Can’t detect Interface Card

Used at the kernel boot screen “biosdevname=0”

 

How to reduce the incoming PSTN ring delay in Asterisk

Edit /etc/asterisk/chan_dahdi.conf and change following lines under channels context.

source http://shyju.wordpress.com/2011/06/25/how-to-reduce-the-incoming-pstn-ring-delay-in-asterisk/

[channels]
cidstart=ring
immediate=yes
faxdetect=no
usecallerid=no ; If you are not using caller id facility.