what is an csr in telecom
AT&T Customer Service Record (CSR) AT&T will provide a Local Customer Service Record (CSR) for TN's associated to the following platform types, UNE-P, UNE-L, VoIP, T1 and Facility based. When an LSP requests a CSR for an AT&T local customer, the Requesting LSP must complete the Customer Service Information Request (CSIR) form.