Not able to enable TLS in asterisk 1.8.8.2

Hi All,

I have installed Asterisk 1.8.8.2 Source Tarball in Centos. installation was successful , i have configured TLS in SIP.conf.

but after restart of asterisk also i was not able to bring up asterisk with TLS. inly udp 5060 is listening .

Regards

Vijay