sip - 思科可视消息等待指示器(VMWI 或 MVI)

Question

如何以编程方式点亮 Cisco IP 电话可视留言等待指示灯(VMWI 或 MWI)？

对于 sipwiz 答案:

IP地址10.1.1.2 =>是我将发送SIP通知消息的本地IP

IP 地址10.1.1.9 => 是我将发送 SIP 消息的思科电话的 IP 地址

The Cisco Phone that I send SIP Message does "care" my messages, and I got exception while i try to get response messge from Cisco Phone :"An existing connection was forcibly closed by the remote host".

实际上，直接向 Cisco Phone 发送 SIP 消息来改变其行为似乎并不正确。因为它容易出现许多安全违规行为。而且我认为 Cisco 不会允许这样做。

"sipwiz" do I need to do extra configuration on Cisco Phone to make this feature work? Do you actually able to make it work on a real Cisco Phone? If so, what kind of extra config yo do on the Phone?

Answer 1

下面是一些粗略的代码，用于构造一个虚拟 SIP NOTIFY 请求，该请求可以发送到 Cisco IP 电话(仅使用 Cisco 7960 进行测试)，从而允许设置和取消设置可视消息等待指示器。

您需要更改 sip:[email protected]到您的 Cisco 电话可识别的 SIP URI。当然，还要根据需要调整 IP 地址和端口。

更新:更新了代码示例，使其更清楚 IP 地址需要在 SIP 请求中的位置。

using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Cisco MWI Test Console:");

        string setMWIRequest =
            "NOTIFY {0} SIP/2.0\r\n" +
            "Via: SIP/2.0/UDP {1}:{2};branch=z9hG4bK{3}\r\n" +
            "To: <{0}>\r\n" +
            "From: <{0}>\r\n" +
            "Call-ID: {4}\r\n" +
            "CSeq: 1 NOTIFY\r\n" +
            "Max-Forwards: 70\r\n" +
            "Contact: {1}:{2}\r\n" +
            "Content-Length: {5}\r\n" +
            "Content-Type: application/simple-message-summary\r\n" +
            "Event: message-summary\r\n" +
            "\r\n" +
            "{6}";

        string mwiBody = "Messages-Waiting: no"; // Change to no to unset MWI.

        var localSIPEP = new IPEndPoint(IPAddress.Parse("192.168.33.116"), 5091);
        Socket udpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
        udpSocket.Bind(localSIPEP);

        setMWIRequest = String.Format(setMWIRequest, "sip:<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="aedbddcbdceeddcbdcd8cbdc80cdc1c3" rel="noreferrer noopener nofollow">[email protected]</a>", localSIPEP.Address.ToString(), localSIPEP.Port, Guid.NewGuid().ToString().Replace("-", ""), Guid.NewGuid().ToString().Replace("-", ""), mwiBody.Length, mwiBody);

        byte[] buffer = Encoding.UTF8.GetBytes(setMWIRequest);

        Console.WriteLine("Sending to Cisco:");
        Console.WriteLine(setMWIRequest);

        udpSocket.SendTo(buffer, new IPEndPoint(IPAddress.Parse("192.168.33.155"), 5060));

        byte[] recvBuffer = new byte[4096];
        int bytesRead = udpSocket.Receive(recvBuffer);

        Console.WriteLine(Encoding.UTF8.GetString(recvBuffer.Take(bytesRead).ToArray()));

        Console.ReadLine();
    }
}