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Traffic Migration from DMS
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Sue Breitsprecher   Offline
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Traffic Migration from DMS
Feb 17th, 2012 at 10:13am
 
Wanted to ask about migrating traffic from a DMS100 onto a Metaswitch.
How difficult is this?
What considerations do I need to be aware of?

Any help is appreciated! Smiley    Sue
 
 
 
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Paul   Offline
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Re: Traffic Migration from DMS
Reply #1 - Feb 17th, 2012 at 10:47am
 
Well the first thing to say is that MetaSwitch has a great engineering team and they have done these migrations several times.

That being said, if you choose not to contract their engineering team then you have to decide what kind of migration you want to perform:

Point Code Proxy - Using the DMS or the MetaSwitch as a proxy for the other with F-Links and trunks between the two.

ONP - A complete duplication of your DMS on a MetaSwitch, CLLI, Point Codes, trunks, subscribers, etc.

Ported Migration - A completely new switch with a unique CLLI, LRN, links, point codes, trunks, etc.

In a Point Code Proxy migration you engineer your DMS to be a proxy to your MetaSwitch where you build F-Links between the two and start migrating subscribers to the Metaswitch, then you can migrate trunks and then lastly the A-Links.  This takes several stages of migration, has a lower potential impact to the subscribers but doesn't require new facilities.

In an ONP you duplicate everything about your DMS into the MetaSwitch and swing links and trunks over in a one-night process.  This has the highest risk but is the fastest migration.

In a completely new switch, once certified you then can "Port" your subscribers in staged migrations to your new switch, this has the most lead time but the least impact on subscribers as a whole.

Clearly the engineering and configuration requirements can't be discussed here but these are the basic types of DMS to MetaSwitch migrations.
 
 
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SadSailor   Offline
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Re: Traffic Migration from DMS
Reply #2 - Feb 17th, 2012 at 11:21am
 
Well put Paul. It really depends on the see-saw of "Speed" versus "Potential Impact to Service". I prefer the Port. The One Night Process (ONP) should really be called One Long Process, because in order to do it in a single night requires many days and nights of preparation, and if it doesn't go well, many hours of frantic key strokes.
 
 
 
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Paul   Offline
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Re: Traffic Migration from DMS
Reply #3 - Feb 17th, 2012 at 12:36pm
 
SadSailor wrote on Feb 17th, 2012 at 11:21am:
...and if it doesn't go well, many hours of frantic key strokes.


Like Manchester?   Smiley
 
 
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