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ATIS 1000671.2000(R2015)
- Signaling System Number 7 (SS7) - Carrier Service Provider Identification (CSPI) (formerly T1.671-2000 (R2005) )
- standard by Alliance for Telecommunication Industry Solutions, 08/01/2000
- Publisher: ATIS
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Carrier Service Provider Identification (CSPI) information is intended to identify to intermediate switches all presubscribed carriers associated with a calling party. Identifiable carrier service providers include the preferred intraLATA toll carrier, the preferred interLATA carrier, and the international carrier. Other carrier types may be included as the need arises.