Call Delay / voice reply

Hello all
I have small problem in asterisk , i am new and need advice help

so i make asterisk system for my office , using analog cables connected to digium card ( this didgium card inserted in server where the asterisk i installed ) so incoming and outgoing calls working , but when i am calling call starts after 8 second , i try with # also , but it’s not resolved please someone help me

another when i am talking my voice repeating , i installed codecs but not solved