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kq4ym
kq4ym
2/26/2018 | 7:09:40 AM
Re: East Germany back in the day
An interesting history of the growth there. The annual growth in the 20 percent area is impressive and as noted last year " FTTH/B connections are up by 20.4% in the 12 months," certainly confirms the steady trend. Interiesting how Russian and Spain are taking the top place in this.
VicePres20268
VicePres20268
2/16/2018 | 9:44:37 AM
Re: East Germany back in the day
Wow, that made me smile!

Apparently, enclosures make good targets and BellSouth (and Southwestern) were good customers.  We used to do our demos at Chester, NJ. The enclosures guys* had designed a product affectionately known as the "hefty hut" from pre-fab concrete panels... specifically to be bulletproof. For very high ranked visitors from very good customers, they would get a special permit from the town so that the visitor could shoot it with a .22. It was otherwise illegal to discharge a firearm within the city limits.

* The enclosures guys were upstairs from our lab in Whippany, including their environmental test chamber. A couple of times, the effluent pipe corroded and we got a salty rain onto our electronics.
brooks7
brooks7
2/16/2018 | 9:27:18 AM
Re: East Germany back in the day
 

Well, of the folks here I think only Duh! and I are really hardcore access folks.  And for most folks that run pretty routers and optical switches, I ask them "Why do you think Outside Plant Cabinets have a shotgun test?"

seven

 
VicePres20268
VicePres20268
2/16/2018 | 9:18:12 AM
Re: East Germany back in the day
Interesting. Thanks for the history. I left telecom in the early 90s and had not kept track. As you say, it's the oddest thing to rip out fiber for copper... and then regret it later.

Access is hard. And expensive. And then you throw in rural! Rinse. Repeat.

Google Fiber is discovering this the hard way.

I find a whole lot of the net neutrality debate is grossly under-informed on this as well. I am not saying net neutrality is "good" or "bad"... just that a lot of the opinions about it that I see do not take into account the reality of how difficult, expensive, and time-consuming the local loop is due to fundamental constraints (like powering the ONU) and economics.
brooks7
brooks7
2/16/2018 | 8:53:08 AM
Re: East Germany back in the day
No, I am saying that many companies did some amount of FTTC - Sprint Local for example.  But most stopped past 1 project or 1 region.

And no, they pulled out the FTTC and put copper back in.  It was one of the oddest things.  But they could not get low priced ONUs that supported their FTTC.  So it was either leave East Germany without DSL or put copper back in.  Sure they regretted that later.

And the idea of separation of data and control processing is alive and well.  Implemented many times in many ways,  More in routing than in phone switching however.

seven

 
VicePres20268
VicePres20268
2/16/2018 | 8:25:44 AM
Re: East Germany back in the day
Just to clarify... you are saying only BellSouth did FTTC in any way. FTTH is certainly out there (says the man typing on a FiOS link at the moment). The difference, of course, is powering.

When you say "it is just cheaper to go all fiber." - are you saying "it's just cheaper to go FTTH rather than FTTC"? Probably so, but that then reveals the problem: they did not put in enough dark fiber in the access to switch over, so it's a rip and replace.  Gotcha.

Ah, well. Before I worked on that project... c. 1991... two other Bell Labs architects and I invented this idea that network functions (specifically "connection control") did not have to be associated with (class 5) switches. They could be sort of virtual. Did anything ever happen with that idea?

 
Tomcombi
Tomcombi
2/16/2018 | 3:54:31 AM
Re: East Germany back in the day
The German Democratic Republic (GDR), German: Deutsche Demokratische Republik (DDR), often known in English as East Germany, existed from 1949 to 1990. It covered the area of the present-day Germany states of Mecklenburg-Vorpommern.It also available on Version Routers customer service
brooks7
brooks7
2/16/2018 | 1:14:25 AM
Re: East Germany back in the day
Yes, you wasted your time.

Essentially all the equipment was ripped out and the fiber abandoned so that DSL over copper could be deployed from COs.

The problem has been that FTTC has been a pretty expensive deployment model.  Really only one company deployed it on an ongoing basis at scale and that was BellSouth.  The problem was how to power ONUs as the requirements increased with ongoing DSL generations.  The ONUs became a rip and replace along with their power scheme.  At some point, it is just cheaper to go all fiber.

seven

 
VicePres20268
VicePres20268
2/15/2018 | 8:03:09 PM
East Germany back in the day
In 1992, I worked on one of the bids to build out the network in the (recently) former East Germany. IIRC it was all to be circuit-switched FTTH/C PON and the bids were to cover essentially the entire region (per promise from DBP-T... now DT). I know a lot of that equipment got put in. Is that fiber not useful or upgradeable? Did I spend a week per month in Darmstadt on V5 standards for nothing?


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