Cannot able to receive call from gafachi

Hi,

Now i am able to make outbond call from asterisk that is configured with gafachi, But unable to receive call .

sip.conf
[gafachi]
type=friend
username=username
secret=Password
host=username.sip.gafachi.com
canreinvite=no
fromuser=username
dtmfmode=rfc2833
context=gafachi-incoming

extension.conf

[gafachi-incoming]
; 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,)

any hint

Thanks in advance