Table Of Contents

National Call Type Processing

National Call Type Processing

---

Revised: July 28, 2009, OL-4366-13

This appendix details how to determine national call type usage. The national call type allows the Call Agent to consolidate multiple dial plans into a Master Dial Plan. All destination IDs can be provisioned with the same Call Type = National. (A Non Conforming Equal Access End Office can also use this call type.) The following tables are needed for proper Call Type determination:

•LSA

•LATA (LATA attributes)

•LATA-MAP (convert digit-string to LATA)

Call Processing first checks if the called number appears in the LSA table. If it appears in the LSA table, the call type is changed to local.

If the LATA tables are populated, call processing reads the calling LATA and called LATA tables. If the LATA values are the same, the call type is converted to toll. If the LATA values are different, the call type is converted to interlata.

Call processing also compares the state values from the calling LATA and called LATA tables. If the state values match, the call is intrastate; otherwise, the call is interstate.

---

Note As the name implies, only use the national call type domestic NPA/NXX. Call processing does not convert the call type to intl if the LATAs are in different countries (for example, the United States and Canada).

---