SIP works

Session Initiation Protocol
    Request-Line: INVITE sip:3000@sip.my-domain SIP/2.0
        Method: INVITE
        Request-URI: sip:3000@sip.my-domain
            Request-URI User Part: 3000
            Request-URI Host Part: sip.my-domain
        [Resent Packet: False]
    Message Header
        Via: SIP/2.0/UDP 202.183.195.167;branch=z9hG4bK4c46.b9213b85.0
            Transport: UDP
            Sent-by Address: 202.183.195.167
            Branch: z9hG4bK4c46.b9213b85.0
        Via: SIP/2.0/UDP 10.0.1.6:5060;received=96.224.14.164;rport=33172;branc$
            Transport: UDP
            Sent-by Address: 10.0.1.6
            Sent-by port: 5060
            Received: 96.224.14.164
            RPort: 33172
            Branch: z9hG4bKPjd9885fe6-95f1-4c44-aec0-bdf7d1f3cca8
        Max-Forwards: 69
        From: <sip:2000@sip.my-domain>;tag=f33572ba-232c-4ff$
            SIP from address: sip:2000@sip.my-domain
                SIP from address User Part: 2000
                SIP from address Host Part: sip.my-domain
            SIP tag: f33572ba-232c-4ff7-9a96-35776cac6ba6
        To: <sip:3000@sip.my-domain>
            SIP to address: sip:3000@sip.my-domain
                SIP to address User Part: 3000
                SIP to address Host Part: sip.my-domain
        Contact: <sip:2000@10.0.1.6:5060>
            Contact Binding: <sip:2000@10.0.1.6:5060>
                URI: <sip:2000@10.0.1.6:5060>
                    SIP contact address: sip:2000@10.0.1.6:5060
        Call-ID: 079b9add-30f9-4fd8-b510-d5820de0b311
        CSeq: 31345 INVITE
            Sequence Number: 31345
            Method: INVITE
        Allow: PRACK, SUBSCRIBE, NOTIFY, REFER, INVITE, ACK, BYE, CANCEL, UPDAT$
        Supported: replaces, 100rel
        [truncated] Proxy-Authorization: Digest username="2000", realm=$
            Authentication Scheme: Digest
            Username: "2000"
            Realm: "sip.my-domain"
            Nonce Value: "af8b3a7c-ed16-11e0-b2a3-3b2246e774ce"
            Authentication URI: "sip:3000@sip.my-domain"
            Digest Authentication Response: "e99d64789dc9fa3858842b004cdff574"
            Algorithm: MD5
            CNonce Value: "437d653c-812d-4868-8f87-701a7574d39a"
            QOP: auth
            Nonce Count: 00000001
        Content-Type: application/sdp
        Content-Length:   298