HEPE

Horizontal Estimated Position Error.

IAMREQ

Initial Address Message. A mandatory message sent from MSC to FMCC to initiate seizure of an outgoing circuit and to transmit address and other...

IPOSREQ

Interim Standard 41. Cellular Radio Telecommunications Intersystem Operations. Signaling protocol for cellular mobility management. A set of...

E9-1-1 Service Provider

The entity responsible for establishing and overseeing the functions necessary to accept 9‐1‐1 calls from carriers and deliver to PSAPs using...