TP-Link T1700X-16TS User Manual page 266

Included TLVs

Select TLVs to be included in outgoing LLDPDU.
Location Identification Parameters

Configure the Location Identification TLV's content in outgoing LLDPDU of the port.
Emergency
Number:
Civic Address:
Emergency number is Emergency Call Service ELIN identifier,
which is used during emergency call setup to a traditional CAMA
or ISDN trunk-based PSAP.
The Civic address is defined to reuse the relevant sub-fields of the
DHCP option for Civic Address based Location Configuration
Information as specified by IETF.
254