Alcatel-Lucent AOS-W 6.5.3.x - Page 981

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Parameter Value
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dialplan 100 XXXXXXX 9%e
Enabling Enhanced 911 Support
AOS-W provides seamless support for emergency calls in the Alcatel-Lucent network by interoperating with
RedSky emergency call server. The switch uses SNMP to interoperate with RedSky call handling system.
This release of AOS-W supports only RedSky emergency call server.
You must configure the RedSky server as an SNMP host and enable SNMP traps to activate the E911 feature
on the switch. For more information on configuring the RedSky server as SNMP host, see Configuring SNMP on
page 860.
The E911 support has the following basic functions:
n location tracking
n call handling
n caller identification and callback capability
For information on call handling, caller identification and callback capability, see the RedSky documentation.
The switch tracks the location of the voice clients and notifies the emergency call server using SNMP traps. The
switch notifies the location of a voice client to the emergency server:
n when it identifies a voice client
n when a voice client roams from one access point to another access point in the same switch
n when a voice client roams from one access point to another access point in a different switch
n when a voice client registers with a PBX system
The notification process ensures that the emergency call server is notified whenever a voice client is identified
or the location of the client is updated. If a voice client roams outside of a WLAN coverage, the switch does not
send any notifications to the emergency call handling system. This may happen when there is a sudden loss of
WLAN coverage due to extreme conditions such as fire accident. In such cases, the last associated access point
will be the location of the voice client.
The switch tracks the location only for voice clients. To track the location of a remote voice client, the administrator
must configure the location of the remote access point in the switch or emergency call server.
The emergency call server queries the switch using the SNMP :get: request to get the location of a specific
emergency caller. In response to the location query, the switch sends the following parameters to the
emergency server:
n Client IP Address
n Client Mac Address
n AP Name
n AP Wired MAC
n AP Location
n AP Mode
n Switch IP Address
The switch also supports location queries for the clients that are not identified as voice clients on the switch.
AOS-W 6.5.3.x | User Guide Voice and Video | 981