West Safety Services’ Phone Discovery Manager (PDM) is an optional on-site appliance that provides layer 2 soft phone tracking capabilities for organizations using Microsoft Lync. The PDM is available as a hardware or virtualized appliance.
LAYER 2 DISCOVERY WITH THE PDM
Layer 2 discovery associates locations to specific layer 2 switches and switch ports. The PDM scans the network using SNMP to match a soft phone’s MAC address to a specific switch port. The PDM then interoperates with the Lync LIS to ensure accurate locations are assigned to Microsoft’s location-aware endpoints.
- Enterprise endpoint sends its MAC address, in a location request, to the LIS.
- The LIS uses the endpoint’s MAC address to query the PDM for the associated switch port information.
- The PDM matches the endpoint’s MAC address to the corresponding switch port, and relays the switch port information back to the LIS.
- The LIS associates the switch port information to the appropriate location, and sends the location back to the endpoint in PIDF-LO format.