disiprouter

i want to implement a simple architecture. at this moment my asterisk server works fine with endpoints and it can initiate calls in both directions. now i want to use a proxy server in between endpoints and my server . so im using dsiprouter with domain name of [login to view URL] and its installed successfully. now there is a problem. i connect my sip users to dsiprouter. and dsiprouter to asterisk as pass thru. when i call any number with sip endpoint there is no problem and the call reaches the dinstar gateway and dinstar call the sim number(ip2tel). but the opposite side of call when sim user call the gateway and gateway route the call through asterisk. when asterisk send request to dsiprouter the request cannot find the endpoint i tried (realm-outbound proxy and etc) but i didnt make it. the error just changed from 407 proxy and still can't find the endpoint . i can see the logs and i guess the problem is dsiprouter . it cant route the calls through endpoint in this way. because when the call reaches the dsiprouter it hangs i debugged using wireshark and the 503 is from voip.ariyanasoft.net. i tried to change outbound carriers and dial executes in asterisk but no ring on sip phone. so i presume the problem is outbound rules inside dsiprouter . please help me with configuration of outbound rulse and carriers for tel to ip calls because ip to tel works fine and i didnt configure anything except connecting dsiprouter to asterisk.