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AastraLink Pro 160 Emergency Call Support
41-001190-02 Rev. 01, Rel. 1.2 1-9
Getting Started
AastraLink Pro 160 Emergency Call Support
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.
Lifeline Phone
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.
Emergency Call Priority
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.