Instruction manual

FUNCTIONAL DESCRIPTION
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Bus Buffers
There are four bus buffers on the circuit pack. The clock driver and receive buffers
interface three system clock signals (2.048 MHz, 8 kHz, and 160 kHz) to the TDM
bus. Two buffers interface the system tones (see Table 3-A) between the TDM bus
and the Service Circuit CP. Music is not provided by the Service Circuit but can be
provided via a port interface on a Tip Ring Line CP (ZTN78).
SAKI
This circuit functions the same as in the SAKI in the common circuitry for the
intelligent port circuits.
Figure 3-18.
Service Circuit (ZTN131)
3-32