ATIS 0700708.1998(S2017)
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PCS 1900 Service Provider Number Portability (formerly T1.708-1998 (R2008) )
Number Portability (NP) allows subscribers to retain their Directory Number (DN) when they change their service provider (service provider portability), location (location portability), or service (service portability). The focus of this specification is to allow PCS1900 systems to support
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