Instruction manual

Line and Trunk Cards Page 1897 of 3156
Features and Services
Trunk Cards
Trunk Cards provide the interface between the Meridian 1 and all trunk
facilities, including not only public and private network trunks (CO, TIE), but
those that connect the Meridian 1 to special features (Recorded
Announcement, Paging, and so forth).
• NT8D14AA Universal (any combination of eight: CO, DID, FX, RAN,
Paging [low resistance], WATS, TIE, Music)
• NT8D15AA E&M (any combination of four: two-wire E&M, four-wire
E&M, four-wire duplex, Paging [high resistance], Emergency Recorder)
Note: For information on ITG Trunk cards, refer to Meridian 1
Integrated Telephony Gateway Trunk 2.0/ISDN Signaling Link:
Description, Installation, and Operation (553-3001-202).
Digitone Receivers (DTR)
Digitone Receivers convert Dual-tone Multifrequency (DTMF) signals to a
digital format acceptable by the Central Processing Unit (CPU). They are
required for all 2500 telephones, some incoming TIE trunks, and Digitone
DID trunks. Because DTRs perform a service rather than support an item, the
quantity depends on the volume of Digitone traffic generated in a system.
• NT8D16AA Digitone Receiver (eight Digitone Receivers)
Controller Cards
Controller Cards provide the interface and control between the network cards
and telephones, consoles, and trunks. These cards are always installed in a
dedicated slot in the Intelligent Peripheral Equipment (IPE) module. One
Controller Card is required per IPE module.
• NT8D01AD Controller-2 (connects up to two Superloops to one IPE
module)
• NT8D01AC Controller-4 (connects up to four Superloops to one IPE
module)