Aastra Telecom Pro 160 User Manual

41-001190-01 Rel. 1.1, Rev. 00

1-9

Getting Started

Because IP phones and data networks require power to operate, they do not 
provide the fail-safe emergency calling capability of a traditional analogue phone. 
The AastraLink Pro 160 supports emergency calling in two ways:

•

Lifeline Phone 

•

Emergency Call Priority

These features are described in detail in the next sections.

The FXO Line 1 and FXS Phone B ports are labelled

 

⎯♥⎯ on the rear of the 

AastraLink unit. These ports provide capability for calling emergency services 
(also known as E911 in North America). In the event of power failure, the 
AastraLink Pro 160 hardware connects these two ports directly together, so that 
you can make an emergency call on FXO Line 1 using an analogue phone 
connected to the FXS Phone B port.

To ensure emergency call routing is available, we recommended that:

•

You connect a traditional analogue phone to FXS B at all times, labelled as 
the E911 Lifeline emergency phone.

•

When connecting telephone lines, connect the LifeLine FXO port first. 

When the AastraLink Pro 160 is active, and an emergency call (by default, 911 or 
9911 in North America) is made from an IP phone, it is preferentially routed to 
any available FXO line. If all FXO lines are in use, AastraLink Pro overrides any 
existing non-emergency call in progress on the Lifeline FXO and routes the 
emergency call in its place. Emergency Call Priority Override may take up to 15 
seconds for the existing call to be cleared; an announcement plays during the 
override operation.

You can use the Web UI to provision emergency call numbers.