Operating Parameters - Nortel Meridian 1 Manual

Using the Background Terminal Page 41 of 120
Call Terminated (CT) A Call Terminated message is sent when the
terminating telephone has Call Number Information Allowed (CNIA) Class
of Service (CLS) and one of the following conditions occurs:
— Call termination to a non-CNIA telephone
— Call Forward No Answer (CFNA)
— Call Park
— Call Transfer from originating or terminating telephones
— Call Pickup received by the telephone
— Conference call
— Call On Hold
No messages are sent in the following cases:
— Dial Intercom calls
— Overridden calls
— Attendant calls
— CNIA-originated calls
— Automatic Wake Up calls
— Trunk calls

Operating parameters

Class of Service for CNIA is limited to 60 telephones and is assigned in
LD 10 and LD 11. LD 20, LD 81, and LD 83 modify printing and counting,
based on CNIA/CNID CLS. Refer to X11 features and services and X11
Software input/output guide.
A telephone that is assigned Virtual ACD Agent (VMA) Class of Service
cannot be assigned CNIA Class of Service.
Collocated telephone and TTY equipment is needed to fully implement this
feature.
Background Terminal Facility Description