c# - 将独立 UCMA 应用程序连接到 SIP 中继提供商

Question

我正在尝试从独立的 UCMA 应用程序向基于连接 IP 地址进行身份验证的 SIP 提供商 (Gamma) 发出出站调用。这是我试图实现此目的的代码(直接从 Michael Greenlee ( http://blog.greenl.ee/2012/06/15/outbound-calls-ucma-lync-server/ ) 中提取):

ApplicationEndpointSettings endpointSettings =
    new ApplicationEndpointSettings("sip:02037571***@80.229.80.***"); // My Ext. IP

...

CallEstablishOptions options = new CallEstablishOptions();
options.ConnectionContext = new ConnectionContext("88.215.61.***", 5060); // Gamma Ext. IP

Conversation conv = new Conversation(_endpoint);

AudioVideoCall avcall = new AudioVideoCall(conv);

avcall.BeginEstablish("sip:07709411***@88.215.61.***", options,
    ar2 =>
    {
        try
        {
            avcall.EndEstablish(ar2);
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex);
        }
    },
    null);

尝试拨号失败，Gamma 返回 403 Forbidden-Source Endpoint Lookup Failed。

我已经将 wireshark 跟踪与这次失败的尝试以及可以成功拨出的硬件 PBX 的跟踪进行了比较。

工作硬件 PBX:

    From: "02037571***"<sip:02037571***@80.229.80.***>;tag=39E432463135364100006C30
        SIP Display info: "02037571***"
        SIP from address: sip:02037571040@80.229.80.***
            SIP from address User Part: 02037571***
            SIP from address Host Part: 80.229.80.***
        SIP from tag: 39E432463135364100006C30
    To: <sip:07709411420@88.215.61.***:5060>
        SIP to address: sip:07709411420@88.215.61.***:5060
            SIP to address User Part: 07709411***
            SIP to address Host Part: 88.215.61.***
            SIP to address Host Port: 5060
    Contact: <sip:02037571040@80.229.80.***:5060>
        Contact URI: sip:02037571040@80.229.80.***:5060
            Contact URI User Part: 02037571***
            Contact URI Host Part: 80.229.80.***
            Contact URI Host Port: 5060

UCMA 申请失败:

        FROM: ""<sip:02037571***@80.229.80.***>;epid=C18B8F5C05;tag=be8d09ca4
        SIP Display info: ""
        SIP from address: sip:02037571***@80.229.80.***
            SIP from address User Part: 02037571***
            SIP from address Host Part: 80.229.80.***
        SIP from tag: be8d09ca4
    TO: <sip:07709411420@88.215.61.***:5060>
        SIP to address: sip:07709411420@88.215.61.***:5060
            SIP to address User Part: 07709411***
            SIP to address Host Part: 88.215.61.***
            SIP to address Host Port: 5060
    CONTACT: <sip:ADRIANHAND49F2.UnifyBusiness.local:5060;transport=Tcp;maddr=172.32.42.62;ms-opaque=260fcc58fdb93b58>;automata;actor="attendant";text;audio;video;image
        Contact URI: sip:ADRIANHAND49F2.UnifyBusiness.local:5060;transport=Tcp;maddr=172.32.42.62;ms-opaque=260fcc58fdb93b58
            Contact URI Host Part: ADRIANHAND49F2.UnifyBusiness.local
            Contact URI Host Port: 5060
            Contact URI parameter: transport=Tcp
            Contact URI parameter: maddr=172.32.42.62
            Contact URI parameter: ms-opaque=260fcc58fdb93b58

如您所见，FROM 和 TO 部分非常相似，但 CONTACT 部分包含我的机器和域的详细信息，而不是我指定为应用程序端点的那些，以及我机器的 LAN IP (maddr =172.32.42.62).

如果我调试和检查 _endpoint，EndpointUri 属性包含 ADRIANHAND49F2.UnifyBusiness.local 字符串，我认为这就是 Gamma 拒绝我尝试调用电话的原因。这个属性是只读的，所以我有点卡住了——有人能帮我连接到我的 SIP 提供商吗？感激地收到所有想法，谢谢!

Answer 1

联系地址来自ServerPlatformSettings参数(本地主机/端口)。

如果您将 localhost 参数更改为带点的地址(或对您来说更有意义的名称)，我希望这对您有用。

我不知道如何设置联系人 URI 的用户，但我不确定这是否重要。