ATIS 0300106(2021-09)

This handbook describes some of the problems being encountered by rural telephone service provider (SP) customers in receiving long distance calls. It discusses some of the industry standards and practices relevant to ensuring call completion, particularly signaling, routing, and trouble handling. This handbook attempts to relate these standards and practices to the call completion problems reported and offers some best practices for ensuring call completion. This handbook provides a resource to SPs to address issues as they are encountered related to long distance call completion/call termination.