Now i am able to make outbond call from asterisk that is configured with gafachi, But unable to receive call .
; NOTE: this section is for Gafachi Origination (incoming) services.
; DID and/or Toll free origination numbers need to include the “1” prefix
; Replace the 12125551234 with your DID or Toll Free number, and repeat or
; change as needed.
exten => 16462781042,1,Dial(SIP/101,)
Thanks in advance