CPN (Calling Party Number). A CCS parameter that identifies the calling party's telephone number.
CPN (Calling Party Number). A signaling parameter that identifies the calling party's ten (10) digit telephone number.
CPN (Calling Party Number). A CCS parameter that identifies the calling party's telephone number. CPNI (Customer Proprietary Network Information). Shall have the meaning set forth in Section 222 of the Act, 47 U.S.C. § 222.