Verilink Access Manager 2000 (896-502037-001) Product Manua Manual de usuario Pagina 128

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Configuring the T1 Network
5-4
Access Manager 2000 User Manual
Figure 5-4 551VST ML List 2 node
The 551VST ML List 2 node includes the old List 1 or new List 2 shelf with a List 2
controller and Phase IINMC software to permit automatic alarm reporting.
A configuration of one or two stand-alone 551VST MLE expansion
shelves at a location can also be configured as this type of node and
should be configured for Data Link access (i.e., far-end) only.
Some rules of thumb
1. A
551VST List 2 with ASCII interface firmware is installed as a
55 1VST List 1/B.
2. A 551 VST MLE shelf, equipped with 4016 List 2 CSU modules
and no controller, can only be used as a far end node.
A circuit element is a single module of the parent node to which Access
Manager is connected.
A circuit is the combination of any two network CSU circuit elements
and their interconnecting DS1 facility, which have Access Manager
access in a DS1 network. One endpoint would be a near-end CSU, and the
other would be a far-end CSU.
4016 List 1 or 2 CSUs
14 eac
551VST ML List 2
NMC
List 2
551VST MLB shelf
551VST MLE shelf
(optional)
4016 List 1 or 2 CSUs
14 eac
Circuit element
Circuit
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