TeamTalk 4 .NET DLL  Version 4.5A
Modules
Here is a list of all modules:
oClient InitializationThe first thing a user application must to is instantiate the TeamTalk4 class
oSound Capture and PlaybackThis section explains how to record and playback audio in the client instance
oVideo Capture and Image DisplayThis section explains how to initialize a video device and display captured images on the user's display
oAudio and Video CodecsThe client is able to encode audio in Speex and CELT format whereas video can be encoded in Theora format. Speex is recommended for voice and CELT for music
oDesktop SharingA user can transmit a desktop window to other users in a channel by passing the handle of a window to the TeamTalk client DLL. The TeamTalk client then converts the window to a bitmap image which is transmitted to the server. The server then forwards the bitmap image to all other users in the channel
oClient Event HandlingWhen events occur in the client instance, like e.g. if a new user joins a channel, the client instance queues a message which the user application must retrieve
oClient Error HandlingThere are two types errors which can occur in the client, either server command error or internal errors. Section Client/Server Commands describes all the commands a client can issue to a server. If a server commands fails the client instance notifies the user application through the event TeamTalk4.OnCmdError(). An example of a server command error could be to issue the TeamTalk4.DoLogin() command with an incorrect server password. The server will in this case respond with the error ClientError CMDERR_INCORRECT_SERVER_PASSWORD. The user application must be designed to process these errors so application users can be notified of errors
oClient/Server ConnectivityTo communicate with a server the TeamTalk client creates both a TCP and UDP connection to the server. Commands, i.e. the BearWare.TeamTalk4.Do*-functions, are sent on TCP whereas audio and video are sent on UDP
oClient/Server CommandsThis section contains the list of commands which can be issued by the client instance to the server
oAudio and Video TransmissionOnce the client instance has joined a channel it can transmit audio and video to other users in the channel. When transmitting audio and video it is important to be aware of how the client is configured to do this. Sections Forward Through Server Transmission Mode and Peer to Peer Transmission Mode explains the two supported data transmission modes
oServer PropertiesThe server keeps track of which users are in which channels and ensures that users in the same channel can communicate with each other. It is also the job of the server to provide user authentication so only users with the proper credentials are allowed to do certain operations
oChannel PropertiesUsers are arranged in a tree structure consisting of channels where each channel can hold a number of users. While in a channel users can transmit audio and video to each other as well as sending channel messages. On a server there will always be a root channel which cannot be deleted
oUser PropertiesUsers can be seen on the server after a successful call to TeamTalk4.DoLogin(). Once logged in a user can send user to user text-messages using TeamTalk4.DoTextMessage() as well as receive broadcast messages. A user cannot send audio and video data to other users until they have joined the same channel
oWindows HotkeysHotkeys can be used to e.g. enable push-to-talk
oWindows MixerThe Windows mixer can also be manipulated so e.g. Line In can be chosen instead of Microphone for recording
\Windows FirewallThe Windows Firewall can be modified so applications can be added to the firewall's exception list