Nortel Networks Video Gaming Accessories 553-3001-211 Manuel D’Utilisation

 NTAK09 1.5 Mb DTI/PRI card

The clock controller interface provides the recovered clock from the external 
digital facility to the clock controller daughterboard through the backplane. 
Depending on the equipped state of the clock controller, the clock controller 
interface enables or disables the appropriate reference clock source, in 
conjunction with software.

Note: Clocking slips can occur between MG 1000S systems that are 
clocked from different Central Offices (COs), if the COs are not 
synchronized. The slips can degrade voice quality.

The 1.5 Mb clock is generated by a Phase-Locked Loop (PLL). The PLL 
synchronizes the 1.5 Mb DS1 clock to the 2.56 Mb system clock through the 
common multiple of 8 kHz by using the main frame synchronization signal. 

pin 49

pin 3

T1

receive tip from network

pin 24

pin 11

R1

receive ring from network

Each MG 1000S that has a digital trunk must have a clock controller 
clocked to an external reference clock.