call established but no audio on both end asterisk using zoiper

[general]
allowoverlap=no
; Disable overlap dialing support. (Default is yes)
bindaddr=0.0.0.0
udpbindaddr=0.0.0.0 ; IP address to bind UDP listen socket to (0.0.0.0 binds to all)
tcpenable=yes ; Enable server for incoming TCP connections (default is no)
tcpbindaddr=0.0.0.0:5160
externip=13.127.186.83 ; IP address for TCP server to bind to (0.0.0.0 binds to all interfaces)
externtlsport=6000
transport=udp
srvlookup=yes ; Enable DNS SRV lookups on outbound calls
rtcachefriends=yes
allowguest=no
context=default
bindport=5060

[1000]
username=1000
secret=asdf@#$1000
type=friend
context=phones
host=dynamic
dtmfmode=rfc2833
insecure=invite,port
canreinvite=no
nat=yes
qualify=yes

You need to ensure “localnet” is also set. If that doesn’t work you’ll need to provide network layout information and packet traces (sip set debug on).

Thanks jcolp ,it works!!! I want some guidance bcoz I am new in asterisk. I want to upload some voice on asterisk So, when Anybody receive my call he will listen that voice ,How I will do this???
Thanks

I want asterisk automatically send sms after call cut or busy to the same no . How i can do this is there any tutorial
Blog , please guide me

Use ‘h’ extension and do all things after hangup there.
To send sms you need a gsm board, gsm sip gateway or some sms service that you can consume from dialplan.