AudioCodes Mediant 500 MSBR, User Manual

Page: 270 / 1248

User's Manual 270 Document #: LTRT-10375
Mediant 500 MSBR
describes the configuration of the device for interoperating between the Skype for Business
environment and the E9-1-1 emergency provider.
Note:
•
The ELIN feature for E9-1-1 is a license-based feature and is available only if it is
included in the License Key installed on the device. For ordering the feature,
please contact your AudioCodes sales representative. For installing a new
License Key, see License Key on page 797.
•
The ELIN feature for E9-1-1 is applicable to the SBC application as well as the
Gateway application for digital PSTN interfaces.
18.7.1 About E9-1-1 Services
E9-1-1 is a national emergency service for many countries, enabling E9-1-1 operators to
automatically identify the geographical location and phone number of a 911 caller. In E9-1-
1, the 911 caller is routed to the nearest E9-1-1 operator, termed
public safety answering
point (PSAP) based on the location of the caller. Automatic identification of the caller's
location and phone number reduces the time spent on requesting this information from the
911 caller. Therefore, the E9-1-1 service enables the PSAP to quickly dispatch the relevant
emergency services (for example, fire department or police) to the caller's location. Even if
the call prematurely disconnects, the operator has sufficient information to call back the
911 caller.
The figure below illustrates the routing of an E9-1-1 call to the PSAP:
1. The VoIP user dials 9-1-1.
2. AudioCodes' ELIN device sends the call to the emergency service provider over the
PSTN or SIP Trunk (PSAP server).
3. The emergency service provider identifies the call is an emergency call and sends it to
an E9-1-1 Selective Router in the Emergency Services provider's network.
4. The E9-1-1 Selective Router determines the geographical location of the caller by
requesting this information from an Automatic Location Identification (ALI) database