Nortel Meridian Meridian 1 Feature Description And Administration page 1501

CLID YES
...
Feature operation
TON and NPI fields, in addition to CLID, are included.
Note 1: For the NPI and TON in CDR feature, existing CDR
implementation procedures must be performed.
Note 2: CLID must be configured for the NPI and TON in CDR feature.
Refer to the "Calling Line Identification" and "ISDN Calling Line
Identification Enhancements" feature modules in this document.
No specific operating procedures are required to use this feature.
International ISDN PRI Feature description and administration
NPI and TON in CDR Page 1501 of 1814