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Feature Examples
Digital Trunk Clocking Examples:
If multiple PRIs exist, the first one that synchronized with the carrier is chosen. In this example, the PRI
in slot02 was the first to synchronize with the carrier; therefore, it is the PLO synchronization source.
If there are multiple PRIs and the one being used for the source goes down, the system begins to
count forward in slot numbers looking for the next available PRI. In this example, the PRI in slot02
went down, so the system now begins looking forward in slot numbers for the next PRI to use as the
clock source.
In this example, the PRI in slot06 was the first to synchronize with the carrier and became the PLO
synchronization source. The PRI in slot06 then went down and the system began looking forward in
slot numbers to find the next PLO source. In this case, the PRI in slot02 was the next source because
after it looks through the rest of the slots in the system, it starts over with slot01.
In this example, there are multiple T1 circuits in the system. There can only be one T1 circuit assigned
as EXTERNAL in the system, so the T1 assigned as EXTERNAL is the PLO synchronization source.
Main KSU
Exp. KSU
PRI
PRI
Figure 1-7 Digital Trunk Clocking Example 1
Main KSU
Exp. KSU
PRI
PRI
Figure 1-8 Digital Trunk Clocking Example 2
Main KSU
Exp. KSU
PRI
PRI
Figure 1-9 Digital Trunk Clocking Example 3
Main KSU
Exp. KSU
T1/E1
T1/E1
Figure 1-10 Digital Trunk Clocking Example 4
ISSUE 1.0
SL1000
D
Digital Trunk Clocking
1-164
Summary of Contents for SL1000
Page 1: ...Features and Specifications Manual A50 031169 001 ISSUE 1 0 January 2011 ...
Page 41: ...Operation None ISSUE 1 0 SL1000 A Features and Specifications Manual 1 33 ...
Page 57: ...Operation None ISSUE 1 0 SL1000 B Features and Specifications Manual 1 49 ...
Page 95: ...Operation None ISSUE 1 0 SL1000 C Features and Specifications Manual 1 87 ...
Page 154: ...Operation None ISSUE 1 0 SL1000 D Data Line Security 1 146 ...
Page 324: ...Operation LCR Operation Flow Diagram ISSUE 1 0 SL1000 L LCR Least Cost Routing 1 316 ...
Page 325: ...LCR Dial LCR Dial Editing ISSUE 1 0 SL1000 L Features and Specifications Manual 1 317 ...
Page 326: ...LCR Cost Centre Code ISSUE 1 0 SL1000 L LCR Least Cost Routing 1 318 ...
Page 586: ...Memo ISSUE 1 0 SL1000 Features Availability by Software Revision 3 6 ...
Page 587: ...Memo ISSUE 1 0 SL1000 Features and Specifications Manual 3 7 ...
Page 588: ...Features and Specifications Manual NEC Corporation ISSUE 1 0 ...