How to find out phone connected with a PC

Question

Is there a way to programatically find out which IP phone is connected with a given PC? We have a need where an application will be installed on each PC, but instead of having the user manually enter the information about the PC, we want auto detect the phone connected with that PC.

Answer 1

Old topic, but if anyone is interested I played around and got something working in VS 2005/C# using SharpPcap and the PacketCDP class from an app on codeproject called Pacanal. I had to make some changes to the PacketCDP.cs code to get it to work, but if you can get that far I believe it was relatively minor. The app I made sniffed the CDP packet for the phone devicename and then used that to call a CUAE app to log a phone into extension mobility. Here's some partial code:
PcapDeviceList devices = SharpPcap.GetAllDevices();
PcapDevice device = devices[i];
device.PcapOnPacketArrival += new SharpPcap.PacketArrivalEvent( device_PcapOnPacketArrival );
device.PcapOpen(true, 1000);
string filter = "ether host 01:00:0c:cc:cc:cc";
device.PcapSetFilter( filter );
device.PcapStartCapture();
private static void device_PcapOnPacketArrival(object sender, Packet packet)
EthernetPacket eth = (EthernetPacket)packet;
returnbool = PacketCDP.Parser(myTreeNode.Nodes, eth.Data, index, LItem, ref deviceName);
HttpWebRequest request = (HttpWebRequest)
WebRequest.Create("http://10.10.50.75:8000/emLogin?phone=" + deviceName + "&user=testuser");