Glossary

1x Evolution Data Optimized (EVDO): EVDO is a revision of CDMA that adds high-speed data capabilities. Originally, this stood for Evolution Data Only, because the channels only carry data, not voice, traffic.
3rd Generation Partnership Project (3GPP): The 3GPP is a standards development organization that covers the definition of the GSM and UMTS cellular network standards. They also define standards for the IMS.

access location entity (ALE): The ALE is responsible for the provision of location measurements to a LIS.
access network (AN): In EVDO networks, the AN acronym refers to the radio segment and the elements that support the radio segment.
access point (AP): In 802.11, an access point is a term used to refer to an infrastructure node.

See also Wireless Fidelity (WiFi).
Address of Record (AOR): See Session Initiation Protocol (SIP).
Address Resolution Protocol (ARP): ARP provides a protocol for discovering the binding between network and hardware addresses, most often between IP and Ethernet addressing.
application service provider (ASP): The provider of higher-level network services as e-mail, web servers, and voice services.
Assisted GNSS (A-GNSS): A-GNSS is a means of using GNSS systems where the target host receives assistance data to help with signal acquisition and calculations.
Assisted GPS (A-GPS): See Assisted GNSS (A-GNSS).
Asymmetric Digital Subscriber Line (ADSL): See Digital Subscriber Line (DSL).
Asynchronous Transfer Mode (ATM): ATM is a link layer protocol that uses very small frames (53 bytes) and predetermined routes, which allow for efficient switching.
Authentication Authorization Accounting (AAA): AAA...

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IP Location