Specifications

Installation and Maintenance Manual - Aastra 5000 AMT/PTD/PBX/0058/4/6/EN
Présentation 01/2011 Page 41
2.3 Overview of the functions
Aastra XS/XL/XD platforms basically:
• Provide temporary links between subscriber lines, various types of networks, and
possibly other platforms or private installations
• Handle subscriber services
• Secure the device operation (Aastra XD only).
To this end, they perform the following functions:
• Managing access to various types of networks:
-RTCP
-ISDN
-X25
- Ethernet
• Managing access to various types of peripheral devices:
-digital sets
- analogue sets
-IP sets
- SIP set
- computer terminals
- DECT base stations
• Managing access to other platforms (multi-site access) through interfaces:
- PCM (E1/T1)
- Ethernet network
- analogue line
-tie line
• Call switching:
- circuit switching
- packet switching
• Signal generation and detection
• Subscriber services:
- Voice mail server
- directory server
- answering machine
- automated attendant
- storing the information and data required for connected devices (voice messages,
directories, etc.)
• Internal management:
- operating and supervising the peripheral devices and networks connected to the
system, together with Aastra Management Portal
- collecting internal or external alarms
- managing expansion cards (AXD, AXL, AXS, AXS12 and AXS6 PBXs):