Circuit Packs
Required Circuit Packs:
The following CPs are provided with all systems and must be mounted in Cabinet 1:
●ZTN82 (V1) or ZTN128 (V2) Call Processor
The ZTN82 or ZTN128 (one per system) provides a central processing unit, Random- Access Memory (RAM) (memory) for call and feature processing, interrupt controller, programmable timers, real time clock, status display, processor bus interface, and four interface ports. The ports provide the following interfaces:
The Call Processor also provides
The Call Processor CP must be mounted in slot 2 of Cabinet 1.
●ZTN81 (Vl) or ZTN127 (V2) Memory
The ZTN81 or ZTN127 (one per system) provides 512K of
The ZTN81 or ZTN127 provides a
The Memory CP must be mounted in slot 1 of Cabinet 1.
●ZTN85 Service Circuit
The ZTN85 (one per system) provides four
The Service Circuit CP must be mounted in slot 3 of Cabinet 1.
Optional Circuit Packs:
The following CPs are optional and can be mounted in any other CP slot.
System Resource Circuit Packs
● TN748 Tone | Detector |
|
|
Provides four | The TN748 is required in addition to the | ZTN85 | |
Service Circuit when more than 75 | Dual Tone Multifrequency (DTMF) dialers are to | ||
be provided | in a system. It might | be required in high traffic situations if a | system |
has less than 75 DTMF dialers. Up to two TN748 Tone Detectors can be provided in a system.
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