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AastraLink Pro 160 Emergency Call Support
1-10 41-001190-02 Rev. 01, Rel. 1.2
AastraLink Pro 160 Administrator Guide
Emergency Call Support Important Notes
Note: The AastraLink Pro 160 guarantees only one emergency call at a time. If
multiple emergency calls are attempted, callers may receive a message
stating that all circuits are busy. A call placed from a phone connected to
FXS B receives the highest priority; it will not be terminated, even by
another 911 call. If a 911 call is made, and the only available FXO line is
already in use by a phone connected to FXS B, then the AastraLink will
attempt to place the 911 call using SIP trunking.
Warning: On remote phones connected to the AastraLink Pro 160, the following
emergency related message displays: “E911 calls are not available
from this phone.” Remote IP phone users should not make
emergency calls using the AastraLink Pro 160, because the location
information will be incorrect. E911 regulations in the United States
require street address location information be transmitted to the Public
Safety Answering Point (PSAP). This information is provided by the
telco, using the location of the analogue line connected to the
AastraLink Pro 160 Lifeline port (FXO Line 1).