At the earlier, I built a network conference system online, using Microsoft's "Netmeeting" for point-to-point connections, very convenient, can directly call each other with network address, just know the other's IP address, the call is input. When using NetMeeting in this way, the caller must be used to be using a computer, and its NetMeeting must be in an open state. If the other party does not open NetMeeting, it is only possible to open NetMeeting by other means to open Netmeeting, otherwise it will not be possible. In this way, when using NetMeeting, if the other party is not online, you will feel very uncomfortable and trouble, it is the benefit of the directory server.
The directory service is used to track users who are using NetMeeting, which compiles a database that is constantly changing correct IP address or computer name for users currently being connected to an Internet or enterprise network service. When you run NetMeeting and connect to a directory server, the server will locate your IP address. To make a call, you only need to select a name from the NetMeeting directory or containing a Web site that points to another computer link, the server will transfer the required IP address between your computers to establish a connection, and then the call is completed. .
When using NetMeeting over the network (whether it is the "New Call" window to use NetMeeting (whether it is the directory server on the LAN, the "New Call" window is enabled, the call mode should be selected "directory server", and the address item must be Select the network address of the directory server that exists and the directory server on the network. When using NetMeeting, as long as connecting to the directory server, there are many user groups talking on the directory server, you can join any one of the conversions allow you to join, no need to contact.
The NetMeeting software itself provides the address of the "Tools → Options" window in the "Call" page in the "Call" list of the server name "in the server name" of the server name ", However, login foreign server is very small, it is best to use local servers, there are directory servers on many hotlines in China, users can check one in the local hotline, even if they don't want it, you can build a directory server yourself, specific practice is to use ILS2 .0 (Internet Locator Server), "Internet Location Server", the past name ULS, provides the LDAP (Lightweight Directory Access Protocol) interface for NetMeeting 3.0 directory services. You can view the ILS directory from the NetMeeting 3.0 or web page, you can also browse the user list currently being using NetMeeting 3.0. We can choose one or more user connections listed in the list, or you can connect to them by entering the location information of other users.
The ILS server is free, users can download and install file ILS20-x86.exe in www.microsoft.com/windows/netmeeting/download/ils20x86.asp, which can be installed in Windows NT / 2000 / XP / 2003 system , Run ILS20-x86.exe, use the system default option to properly install it. After completing, select the Project Services under the Administrative Tools menu, you can see a service called "Microsoft LDAP Service" in the system default service.
After the service is started on the server, you can use the directory service on other terminals. When you first access, you will change the directory server address on your computer to: xxx.xxx.xx.xxx: 1002, the front is the IP address of the server (LAN users use the intranet IP, WAN users use public IPs, followed by NetMeeting Using the port number of the server. In addition, when we start Netmeeting, the "Directory Server" often appears, and combines the usual use, the main reasons are as follows:
(1) The computer is not connected to the network, and only the call is only connected to a local area network or a wide area network;
(2) The directory server of the call is not open, not all directory servers are open all day, you can use the ping command to test the status of your directory server, see if the server is turned on;
(3) The network bandwidth is tense. This phenomenon does not appear in the local area network. It is mainly in the wide area network. When the peak of the Internet or the Internet line fault, this situation often occurs, and the access to the foreign directory mentioned above The server is rarely successful is the reason for the tight network bandwidth;
(4) If you use the firewall, NAT or proxy server, this may happen, NetMeeting cannot be used normally on the network behind the firewall, NAT or proxy server, which transmits dynamic changes in the communication process during communication. Complex analysis of packet content, while most firewalls or router products use Network Address Translation (NAT) feature, they cannot support these applications, you can choose some special firewalls or routers, which use Netmeeting to use dynamics The port can open all ports to run this software with triggering methods.
