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DEFINITY Enterprise Communications Server Release 8.2
Upgrades and Additions for R8r
555-233-115
Issue 1
April 2000
Adding or Removing Cabinet Hardware
6-124Add Center Stage Switch
6
Figure 6-45 shows 2 SNs used as a CSS for up to 23 EPNs. Use this configuration
when high inter-SN traffic is expected.
Figure 6-45. 2-Switch Node CSS with High Inter-SN Traffic
Fiber Engineering for 2 SNs
Switches with 2 SNs are connected by 1 to 7 fiber links to provide sufficient
switching fabric at the CSS. The traffic in all locales within a single SN does not
require engineering. Only traffic that links from locales in 1 SN to the other SN
(and vice versa) must be engineered. The traffic that links across these fibers is
simply the sum of the traffic that links to locales located in the other SN.
Figure Notes
1. Switch Node (SN) 1
2. Switch Node 2
3. PPN Cabinet
4. EPN Cabinet 1
5. EPN Cabinet 11
6. EPN Cabinet 12
7. EPN Cabinet 23
8. Inter-SN Connection (4 fibers)
1 2
3 4 5
6 7
8
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