- Arrange decision nodes in order from general to specific, such as “State, Area Code, 6 Digit#” rather than “6 Digit, State, Area code”.
- Avoid duplicating nodes on the Call Processing Record (CPR).
- A 6 Digit node cannot be on the same CPR with an NXX node.
- An NXX node must be preceded by an Area Code node.
- Exception: If you only use NXX labels in the NXX node (and no actual NXXs), then the NXX node does not have to be preceded by an Area Code node. This is because NXX labels as defined on the LAD page will already include an Area Code in their definition.
- It is strongly recommended not to use NXX as the first node of a CPR and always place an Area Code node or LATA node before an NXX node.
- A CPR can have both a TEL# and an ANNOUNCE node. However, on any given row (branch) of the CPR, only one of these nodes may be filled in; the other must be empty.
- On any row (branch) of a CPR, the last node that is filled in with a value represents the termination of the call.
- On a MAIN section, the last node that is filled in with a value must be TEL#, ANNOUNCE or Go To.
- On a subsection, the last node that is filled in with a value must be either TEL# or ANNOUNCE.
- CARRIER, TEL#, Announce, or Go To cannot be the first node of a CPR.
- The PERCENT node and the ANNOUNCE node cannot both be used on the same routing path.
- CPR can neither have more than 999 rows in a column nor can it have more than 20 columns in a section (1 column per CPR node).
- If a CPR contains section(s), wherein a section results from the use of the Go To node, then each section may consist of a maximum of 999 rows by 20 columns (1 column per CPR node).
- A CPR may contain up to 999 different Destination Numbers in a TEL# node per record.
- If the first column of the CPR is a 6 Digit, 10 Digit or NXX node, then the entire CPR will have a 200 row limit.
- A CPR can contain a maximum of 775 consecutive ‘OTHER’ rows in any CPR column. It is recommended that CPR stay below 675 consecutive ‘OTHER’ rows.
Learn more about this topic in the following video!
Disclaimer: This video is intended to be used as a guide for educational purposes only. Pages shown in the video may differ slightly from the Production Environment.