System information

Configuring for Network Management Applications
LLDP (Link-Layer Discovery Protocol)
elin-addr < emergency-number >
This feature is intended for use in Emergency Call Service
(ECS) applications to support class 3 LLDP-MED VoIP
telephones connected to a 5300xl switch in a multiline
telephone system (MLTS) infrastructure. An ELIN
(Emergency Location Identification Number) is a valid
North American Numbering Plan (NANP) format
telephone number assigned to MLTS operators in North
America by the appropriate authority. The ELIN is used
to route emergency (E911) calls to a Public Safety
Answering Point (PSAP).
(Range: 1-15 numeric characters)
Configuring Coordinate-Based Locations. Latitude, longitude, and
altitude data can be configured per switch port using an SNMP management
application. For more information, refer to the documentation provided with
the application. A further source of information on this topic is RFC 3825-
Dynamic Host Configuration Protocol Option for Coordinate-based
Location Configuration Information.
Note Endpoint use of data from a medPortLocation TLV sent by the switch is device-
dependent. Refer to the documentation provided with the endpoint device.
Table 15-5. Some Location Codes Used in CA-TYPE Fields*
Location Element Code Location Element Code
national subdivision 1
regional subdivision 2
city or township 3
city subdivision 4
street 6
street suffix 18
street number 19
additional location data 22
unit or apartment 26
floor 27
room number 28
*The code assignments in this table are examples from a work-in-progress (the
internet draft titled “Dynamic Host Configuration Protocol (DHCPv4 and
DHCPv6) Option for Civic Addresses Configuration Information draft-ietf-
geopriv-dhcp-civil-06” dated May 30, 2005.) For the actual codes to use,
contact the PSAP or other authority responsible for specifying the civic
addressing data standard for your network.
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