Rates for Local Calling Area calls are based on Call Plans as published in the tariffs. CCMI is a company that maintains information for the Call Plans. Each Call Plan can have up to 22 Rate Line Reference Numbers (RLRN) associated with it. CCMI maintains the RLRN tables as well as the local calling area and rate center tables. The solution determines the rate a call will be charged by combining information from these tables.
IDI solution uses information from these tables to apply your rates to Local Calling Area calls.
A Call Plan is associated at the Pricing Plan level on the Main tab of the Pricing Plan window in the solution. Each Call Plan can contain up to 22 rates (from the Rate Line Reference number). This Call Plan is based on the customer's NPANXX. You need to know how the ILEC in the area where you are providing local service determines Call Plans. This information can usually be found by consulting the local phone directory and the tariff filed with the state.
When a usage detail record (UDR) is loaded into the IDI solution, the parser sets a flag indicating that the call may be a local call that may need to be rated using Pt-to-Pt Rating.
When the deriver sees the flag, it looks up the the originating number and the terminating numbers in the imported tables.
The record is then sent to a secondary look-up which results in a set of four items that represent the call (example: NY,4006,4,18):
Originating State
Originating OCN (Operating Company Number)
Calling Plan Number
Rate Line Reference Number
Based on the service number's Pricing Plan, the Rater then looks in the Rate Plan Details to match the Rating Method and Location information to determine the charge.