AudioCodes Mediant 1000B User Manual page 437

User's Manual
1. The Administrator provisions the LIS database with the location of each network
element in the Enterprise. The location is a civic address, which can include
contextual in-building and company information. In other words, it associates a
specific network entity (for example, a WAP) with a physical location in the Enterprise
(for example, Floor 2, Wing A, and the Enterprise's street address). For more
information on populating the LIS database, see ''Adding ELINs to the Location
Information Server'' on page 438.
2. The Administrator validates addresses with the Emergency Services provider's MSAG
–a companion database to the ALI database. This ensures that the civic address is
valid as an official address (e.g., correct address spelling).
3. The Lync 2010 client initiates a location request to the LIS under the following
circumstances:
•
Immediately after startup and registering the user with Lync Server 2010
•
Approximately every four hours after initial registration
•
Whenever a network connection change is detected (such as roaming to a new
WAP)
The Lync 2010 client includes in its location request the following known network
connectivity information:
•
Always included:
♦
♦
•
Depends on network connectivity:
♦
♦
For a Lync 2010 client that moves inside the corporate network such as a soft phone
on a laptop that connects wirelessly to the corporate network, Lync Server 2010 can
determine which subnet the phone belongs to or which WAP / SSID is currently
serving the soft-client.
4. The LIS queries the published locations for a location and if a match is found, returns
the location information to the client. The matching order is as follows:
•
WAP BSSID
•
LLDP switch / port
•
LLDP switch
•
Subnet
•
MAC address
This logic ensures that for any client that is connected by a wireless connection, a
match is first attempted based on the hardware address of its connected access point.
The logic is for the match to be based on the most detailed location. The subnet
generally provides the least detail. If no match is found in the LIS for WAP BSSID,
LLDP switch / port, LLDP switch, or subnet, the LIS proxies the MAC address to an
integrated Simple Network Management Protocol (SNMP) scanning application. Using
SNMP may benefit some organizations for the following reasons:
•
LLDP is not supported by Lync Server 2010 so this provides a mechanism for soft
phones to acquire detailed location information.
•
Installed Layer-2 switches may not support LLDP.
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
Version 6.8
IPv4 subnet
Media Access Control (MAC) address
Wireless access point (WAP) Basic Service Set Identifier (BSSID)
Link Layer Discovery Protocol-Media Endpoint Discovery (LLDP-MED)
chassis ID and port ID
26. Configuring Supplementary Services
437 Mediant 1000B Gateway & SBC