Panasonic 1200N User Manual

When connecting two or more ATM Switch units or an ATM Switch unit with other
hardware, it is necessary to synchronize the units by designating them as a master
or slave. In addition, it is possible to set designated lines to transmit data according
to the clock received by the line (loop time).

When an ATM Switch unit is designated as the master, the transmission data from
all the line cards installed in its slots are output in sync with the self-running clock
generated within the hardware.

The ATM Switch may be designated as a “slave” switch. The command 

 designates a port as the slave port; a clock is derived from the

signal on this receive port and the onboard clock is synchronized or phase-lock
looped to it. From this, all transmit ports are subsequently clocked. Only ports in
slots 0 or 1 (ports 00-13) may be slave ports. No ports on a TAXI interface card
may be used as a slave port.

, which is a port specific, slave clocking command, has priority

regardless of whether the switch is set to master or slave. Set looptime slaves the
transmit port to the adjacent receive port instead of the internal clock.

Centillion 1200N

Centillion 1200N