# Commercial Mobile Alert System
> **Federal Communications Commission** · Final rule. · Published 2008-09-22 · Effective 2008-10-22 · 73 FR 54511
## Document
- **Document number:** E8-21946
- **Category:** other
- **Federal Register citation:** 73 FR 54511
- **CFR reference:** 47 CFR 10
- **Publication date:** 2008-09-22
- **Effective date:** 2008-10-22
- **FCC docket:** PS Docket No. 07-287
## Abstract

In this document, the Federal Communications Commission (Commission or FCC) adopts rules to further enable Commercial Mobile Service (CMS) alerting capability for CMS providers who elect to transmit emergency alerts to their subscribers. This Commercial Mobile Alert System Third R&O (CMAS Third R&O) represents our next step in establishing a Commercial Mobile Alert System (CMAS), under which CMS providers may elect to transmit emergency alerts to the public. We take this step pursuant to the mandate of section 602(b) of the WARN Act, which requires the Commission to adopt rules allowing any CMS provider to transmit emergency alerts to its subscribers; requires CMS providers that elect, in whole or in part, not to transmit emergency alerts to provide clear and conspicuous notice at the point of sale of any CMS devices that they will not transmit such alerts via that device; and requires CMS providers that elect not to transmit emergency alerts to notify their existing subscribers of their election.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/09/22/E8-21946/commercial-mobile-alert-system)
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