Hi, I am configuring setting in that prototype freeswitch is running behind the sip-proxy and i am using OpenSbc as sip Proxy. My sip service Provider is Gafachi : I am able to register with gafachi for inbound/outbond call if i am not using OpenSbc but face problem when i give the proxy as ip on which OpenSbc Is running: Gateway setting i am using is that: <gateways> <gateway name="192.168.96.9"> /// account username *required* /// <param name="username" value="UserName"/> /// auth realm: *optional* same as gateway name, if blank /// <param name="realm" value="gafachi"/> <!--<param name="realm" value="64.192.112.13"/>--> /// account password *required* /// <param name="password" value="password"/> /// extension for inbound calls: *optional* same as username, if blank /// <param name="extension" value="1020"/> /// proxy host: *optional* same as realm, if blank /// <param name="proxy" value="192.168.96.115"/> //Ip address on which OpenSbc running: /// expire in seconds: *optional* 3600, if blank /// <param name="expire-seconds" value="600"/> </gateway> </gateways> As far as i know realm create the address for where request should go. and in my case it should be : username@gafachi and proxy set from where request go i am giving it as machine ip where OpenSBC is running: Problem is that when i give proxy as 192.168.96.115: It make request as UserName@192.168.96.115 instead of UserName@gafachi Can you guide me where i am wrong : Thanks in advance Yogesh