Matrix ETERNITY NE System Manual 839
• Select the Type of Trunk Auto Answer for the Day and for the Night as: For all Calls or When Busy. 
You may select the same or different options for the Day and Night, according to your requirement.
• Select the Trunk Auto Answer Greeting message, the Trunk Auto Answer Ring Back Tone 
Message, and the Trunk Auto Answer Busy Bye Message for the Day and Night.
You may select different Greeting, Ring Back Tone and Busy Bye Message for each time zone.
For detailed instructions, see
• “CO Trunks”
• “Mobile Trunks”
• “SIP Trunks”
2. Configure the Trunk Auto Answer related Timers, if required. The following Timers are of relevance to the 
Trunk Auto Answer Feature:
• The DID Inactivity Timer (default: 60 seconds)
• The Ring Back Tone Timer (default: 45 seconds)
• The Busy Tone Timer (default: 7 seconds)
• You may change the duration of these timers from the“System Timers and Counts” page under 
Advanced Settings.
The Ring Back Timer and the Busy Tone Timer are also applicable for the Ring Back Tone and the Busy 
Tone played for internal calls.
3. Record and assign Voice Modules for the following Voice Messages related to this feature: 
• Trunk Auto Answer Greeting Message.
• Trunk Auto Answer Ring Back Tone Message
• Trunk Auto Answer Busy Bye Message
For each of these messages, you can record four different messages.