Media server system announcements can be divided into two categories: intercept announcements and interactive announcements. During the system announcement handling the Media server is controlled by Telephony Control Server for both system announcement types.
Telephony Control Server uses intercept announcements in particular to react to dropped calls. In this way Telephony Control Server can create error announcements or other notes that are played to a subscriber when he/she sets up a connection.
Intercept announcements can be grouped as follows:
System Announcements with a permanent content – e. g. The called subscriber is currently not available. Please hang up and try again later.
System Announcements with variable contents include at least one individual parameter – e. g. The phone number 321-9876 you have dialed has changed. The new phone number is 321-6789.
A Telephony Control Server intercept announcement can consist of up to three tones, system announcements or a combination of these that are all controlled by Telephony Control Server. After Telephony Control Server has requested the Media server to play the system announcement, the Media server performs all required activities independently.
Interactive announcements assume caller actions – e. g. pushing telephone keys to generate DTMF tones or entering voice commands (IVR ). Example: The phone number 321-9876 you have dialed has changed. The new phone number is 321-6789. If you want to be connected to the new phone number, push 1.
The caller's reaction to the system announcement determines how Telephony Control Server subsequently handles the connection.
Parent topic: System Announcements for Telephony Control Server