Aastra 470 System Manual

Expansion Stages and System Capacity
54
Aastra 470 ab R3.0
syd-0337/1.5 – R3.0 – 05.2013
Use of VoIP channels
VoIP channels are always required between IP and non-IP endpoints. They are
freely available, i.e. they are always used wherever they happen to be needed. The
figure below provides an overview of the cases where VoIP channels are needed
and how many.
Tab. 16 Required VoIP channels between two possible endpoints
Non-IP endpoints:
• Analogue terminal (FXS)
• Digital system terminal (DSI)
• DECT cordless phone (DSI)
• ISDN phone (BRI-S)
• External via analogue exchange (FXO)
• External via ISDN exchange (BRI-T/PRI)
• Internal voice mail system
• Auto-Attendant
• Internal announcement service
• Music on hold
• Conversation recording
• Queue with announcement
IP endpoints:
• IP system phone
• Aastra SIP terminals
• Standard SIP terminal
• DECT cordless phone via SIP DECT
• WiFi cordless phone via SIP DECT
• WiFi cordless phone via SIP access point
• WiFi mobile phone via AMC-Controller
• External via SIP provider
IP endpoints on satellites:
In normal operation, all IP endpoints are registered on
the master – even when these are located locally on the
satellite.
Master
Satellit
IP endpoint
IP endpoint
Non-IP endpoint
Non-IP endpoint
Non-IP endpoint
Non-IP endpoint
Direct switching: No VoIP channel
Indirect switching: 2 VoIP channels
2 VoIP channels
No VoIP channel
No VoIP channel
1 VoIP channel
1 VoIP channel

Aastra 470 Specifications

General

Brand	Aastra
Model	470
Category	Telephone
Language	English