This document specifies the access network requirements for Callback to an Emergency Call Origination (CECO). These requirements pertain to 1x Circuit Switched (1xCS) calls routed to a 1xCS access network and 1xCS calls routed to a non-1xCS access network. For example, the requirements pertain to Circuit-Switched Fall Back (CSFB) for a Long Term Evolution (LTE) access network. The requirements are subject to regional regulation.
TIA TIA-1191
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Callback to an Emergency Call Origination Stage 1 Requirements
Telecommunications Industry Association , 08/01/2011
Pages: 16
