Adding Elins To The Location Information Server; Passing Location Information To The Pstn Emergency Provider - AudioCodes Mediant 4000 SBC User Manual

CHAPTER 16 Services
If there is no match and the LIS cannot determine the location, the user may be prompted to
manually enter the location. For example, the client may be located in an undefined subnet, at
home, in a coffee shop or anywhere else outside the network. When a user manually provides a
location, the location is mapped based on the MAC address of the default gateway of the client's
network and stored on the client. When the client returns to any previously stored location, the
client is automatically set to that location. A user can also manually select any location stored in
the local users table and manage existing entries.

Adding ELINs to the Location Information Server

As mentioned in the previous section, the administrator needs to populate the Location Information
Server (LIS) database with a network wire map, which maps the company's network elements to
civic addresses. Once done, it can automatically locate clients within a network. You can add
addresses individually to the LIS or in a batch using a comma-separated value (CSV) file containing
the column formats for the network elements, as listed below:
■ Wireless access point:
<BSSID>,<Description>,<Location>,<CompanyName>,<HouseNumber>, <HouseNum-
berSuffix>,<PreDirectional>,<StreetName>,<StreetSuffix>,<PostDirectional>,
<City>,<State>, <PostalCode>,<Country>
■ Subnet:
<Subnet>,<Description>,<Location>,<CompanyName>,<HouseNumber>, <HouseNum-
berSuffix>,<PreDirectional>,<StreetName>, <StreetSuffix>,<PostDirectional>,
<City>,<State>,<PostalCode>,<Country>
■ Port:
<ChassisID>,<PortIDSubType>,<PortID>,<Description>,<Location>,<CompanyName>,
<HouseNumber>, <HouseNumberSuffix>,<PreDirectional>,<StreetName>,
<StreetSuffix>,<PostDirectional>,<City>,<State>,<PostalCode>,<Country>
■ Switch:
<ChassisID>,<Description>,<Location>,<CompanyName>, <HouseNum-
ber>,<HouseNumberSuffix>,<PreDirectional>,<StreetName>,<StreetSuffix>,
<PostDirectional>, <City>,<State>,<PostalCode>,<Country>
For the ELIN number to be included in the SIP INVITE (XML-based PIDF-LO message) sent by the
Mediation Server to the ELIN device, the administrator must add the ELIN number to the
<CompanyName> column (shown in the table above in bold typeface). As the ELIN device
supports up to five ELINs per PIDF-LO, the <CompanyName> column can be populated with up to
this number of ELINs, each separated by a semicolon. The digits of each ELIN can be separated by
hyphens (xxx-xxx-xxx) or they can be adjacent (xxxxxxxxx). When the ELIN device receives the
SIP INVITE, it extracts the ELINs from the NAM field in the PIDF-LO (e.g., <ca:NAM>1111-222-
333; 1234567890 </ca:NAM>), which corresponds to the <CompanyName> column of the LIS.
If you do not populate the location database, and the Skype for Business location policy, Location
Required is set to Yes or Disclaimer, the user will be prompted to enter a location manually.

Passing Location Information to the PSTN Emergency Provider

When a Skype for Business client, enabled for E9-1-1 emergency services, dials 9-1-1, the location
data and callback information stored on the client is sent with the call through the Mediation Server
to a SIP Trunk-based emergency service provider. The emergency service provider then routes the
call to the nearest and most appropriate PSAP based on the location information contained within
the call.
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