IP Location

For L2TP, the LAC is an aggregation node that instantiates tunnels.

For L2TP, the LNS terminates tunnels.

L2TP allows PPP sessions to be tunneled over IP and ATM networks.

LDAP is a protocol that provides directory listings, such as a listing of e-mail addresses or contact information.

LCP is the link management part of PPP.

See also Point-to-Point Protocol (PPP).

LLDP is a link layer protocol built on the 802.x series of protocols whereby devices can provide information about themselves to other devices on the same network segment.

LLDP-MED is an extension of LLDP that includes support for media-related information.

A LAN is a network that operates over a small area.

Location acquisition is the retrieval of location information in an understood and consistent form by a location recipient.

Location conveyance is the provision of location information to a location recipient.

Location determination is the combining of a set of measured parameters, contextual data, and algorithms to calculate a position.

The source of location information; performs location determination.

The LIS is responsible for determining the location of devices within an access network and making that information available.

Location measurement (v) is the obtaining of specific key and transient parameters associated with a target device which will be useful in determining location. A location measurement (n) is the actual unit of data that relates to location.

In 3GPP networks, an LMU provides location measurements to the network.

See also access location entity (ALE).

A Location Recipient is a consumer of location information.

A Location Server is a provider of location information. An LS is not necessarily the source or generator.

LCS (derived from LoCation Services) is a service that relies on location information and is used by 3GPP.

An MIB is a structured repository of information that is maintained by managed devices.

The MSAG is a database of U.S. addresses.

MAC refers to the second OSI layer and applies to shared media protocols where access to a common media needs to be managed. A MAC address is the address used to uniquely identify a device at this layer. For 802.x protocols, this address has been standardized and is a 48-bit sequence that is managed by the IEEE.

In IMS, the MGCF performs call signaling conversion between SIP and ISUP.

A meridian is a line of equal longitude that runs in a north-south direction.

The MIN is a unique identifier assigned to CDMA handsets.

A mobile station in GSM is the term used to refer to the mobile telephone, or other GSM device.

See also User Equipment (UE).

The MSISDN is a 15-digit E.164 number used for a mobile telephone. The MSISDN is the real "phone number" of a device.

In cellular networks, the MSC is the external interface of the circuit-switched (voice) part of the RAN. The MSC manages signaling for voice.

MIME provides metadata, in particular a file type, or MIME-type, for mail contents. MIME has become a standard for the transmission of files on the Internet and is used in HTTP, SIP, and other protocols as well as SMTP (e-mail).