[Asterisk-Users] SIP Error: Network Unreachable

[Ignace CARIA]

Hi,

I have my asterisk running directly plugged on an static public IP 
accessible by Internet.

I try to contact an Cisco VoIP system on another static public IP 
address but asterisk return me 403 - Forbidden.  When I debug sip flow, 
it tells me : Network Unreachable.

I'ts certainly an error in my sip.conf but I can't find where it is...

I'm sure about IP addresses.



SIP.conf
[general]
port = 5060                   
bindaddr = 213.177.xxx.yyyy     ;    My Pubic Address.
context = incoming_SIP         
disallow=all
allow=alaw
allow=gsm
allow=ulaw
#include sip_additional.conf

Extensions.conf

exten => 4700,1,Dial(SIP/4700 at 213.177.xxx.yyy|30|m)      Adress to 
Contact...


Please help

Regards,

Ignace