STM1-to-E1s

Unanswered Question
Jul 4th, 2008
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I have 8 ports STM card installed in my ONS 15454, a customer want to connect central site to 3 remote sites. The connection between the customer and us is on optical STM1 connecting to port 1 on ONS. The three other sites will share this STM1 in this ratio Site1-30E1, Site2-18E1 and Site3-15E1. All I have on the ONS is this 8-ports STM1(OC3IR-STM1SH-1310-8). All the remote site are connected using optical. Will this solution be achievable without using any other cards?

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Tom Randstrom Tue, 07/08/2008 - 07:46
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I am not clear on the network configuration.


Is your 454 connected to 4 customer sites using an STM1 link for each (total 4 STM1 links)? Or is your 454 connected to 1 customer site using one STM1 link and the customer is then connecting to the other 3 sites using STM1 links?


Sorry for the lack of a good response.


viyuan700 Sat, 07/26/2008 - 19:16
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Hi ,

If you have got the answer fine otherwise whatever you have mentioned is enough for the link.


1 STM1 have 63 E1 and if you connect customer site in ring u can divide as per ur message 30+18+15=63 with one port ONLY.

If making point to point link for all 3 sites then need 3 STM port on your ONS.



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