Specifications

settings03.fm
A31003-H3590-M100-5-76A9, 11/2011
HiPath 3000 Manager E, Administrator Documentation
9-91
Nur für den internen Gebrauch Settings Menu
Settings | Lines/networking
9.4.10 ISDN parameters
The Reference Clock synchronizes procedures across trunks within a given network or CO.
Specific trunks are selected and used by the communication system as points of reference for
the clock. Under most circumstances, you will not have occasion to change the reference trunk
assignments. However, if the reference clock trunk is missing or malfunctions, then you must
assign the reference clock to one or more other trunks using the ISDN parameters.
9.4.10.1 Clock tables
Normally, the communication system automatically selects the trunk to be used as a reference
for all of the communication systems within a given network or CO. The communication system
chooses the trunks in the order of preference shown below:
a) PRI/S
2M
CO trunk
b) BRI/S
0
CO trunk
c) PRI/S
2M
tie trunk (only slave configuration)
d) BRI/S
0
tie trunk.
To override this selection order, you complete the Allowed Nos. List and Denied Nos. List
accordingly. The automatic search for the reference clock source can be controlled so that the
priority for the search is as shown below.
a) Allowed Nos. List
b) PRI/S
2M
CO trunk
c) BRI/S
0
CO trunk
d) PRI/S
2M
tie trunk (only slave configuration)
e) BRI/S
0
tie trunk.
To add trunks to the Allowed or Denied Nos. Lists, use the respective lists. When you add trunks
to these lists, the communication system first searches for the reference clock trunk in the Al-
lowed Nos. List. The trunks in this list override the communication system’s automatic choices.
Trunks on the Denied Nos. List are considered ineligible and are disregarded.
Position
Positions 1-4 reflect the priorities 1-4 (for the Allowed nos. list) and 1-16 (for the Denied nos.
list).
Settings | Lines/networking | ISDN parameters