Aastra NeXspan C, Руководство по установке

Страница: 191 / 196

AMT/PTD/PBX/0020/2/4/EN 01/2007 Page 191
The line "MASTER SITE FAR FROM" is used to compensate the DECT clock transmission time
from one site to another. Adjustment is made in 100 m steps on the slave PBXs, with the formula
described in section Synchronization on M6501 L/R/RM IP PBX and Succession 6500 Media
Gateway with OCT4/OCT4 I to the page 140. The minimum value for the "compensation"
distance is "< 100 meters" and the maximum value "> 2000 meters".
The line "CURRENT STATE" gives the current state of DECT synchronization.
The possible states are: “transmitter”, “transmitter netwk clk”, “transmitter local clk”, “receiver”,
“receiver not OK”, “receiver polarity OK”, and “receiver polarity not OK”. It is thus possible to
know:
• whether the clock is taken from the network or the local clock,
• whether a slave site takes its synchronization from the master or if it has become transmitter
due to a link problem with the master,
• whether the cable polarisation is correct.