Page 723 of 894
Circuit Card Description and Installation
732
NTAK20 Clock Controller daughterboard
Contents
This section contains information on the following topics:
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 723
Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 726
Functional description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 727
Introduction
Digital trunking requires synchronized clocking so that a shift in one clock
source results in an equivalent shift in all parts of the network.
Synchronization is accomplished with an NTAK20 clock controller
daughterboard in each MG 1000S that contains a digital trunk card.
The NTAK20 clock controller daughterboard mounts directly on the
following cards:
• NTAK09 1.5Mb DTI/PRI
• NTBK50 2.0 Mb PRI
• NTRB21 DTI/PRI/DCH TMDI
• NTBK22 MISP
• NT6D70 SILC
• NT6D71 UILC