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Rhosford 12/5/2012 | 12:04:55 AM
re: Tellabs Looks to Europe I am looking for 25-30 each of the following units
3AL45028AA or AJ
3AL11008AA or AD
These units must be tested and inspected
USA 12/4/2012 | 9:48:01 PM
re: Tellabs Looks to Europe Mary, I admit after all the layoffs, a number of people are now Bowling Broke, but Tellabs manufacturing site is in Bolingbrook, IL ;-)
BlueWater66 12/4/2012 | 9:47:47 PM
re: Tellabs Looks to Europe The description of the 6300 products sounds identical to their 6400 series (from their Ocular acquisition).

Is this the 6400 series modified to support SDH? From what I've seen of Tellabs, there are only three main products - 6400, 5500, 6500. This newly announced 6300 seems to have come out of left field. So, I suspect its a slightly modified 6400. Anyone know?
grapsfan 12/4/2012 | 9:47:44 PM
re: Tellabs Looks to Europe The 6300's are European transport boxes...a 4/4/1 cross-connect (6350) and an SDH/GigE/DWDM MSPP (6340), plus a couple of NEs designed for the edge. That's according to their Web site.

Completely different than the 6400s, which are the Ocular boxes acquired recently. AFAIK, these do not have SDH interfaces and are not targeted for European applications.
jamesbond 12/4/2012 | 9:47:43 PM
re: Tellabs Looks to Europe The 6300's are European transport boxes...a 4/4/1 cross-connect (6350) and an SDH/GigE/DWDM MSPP (6340), plus a couple of NEs designed for the edge. That's according to their Web site.

---------------------------

Sorry for an ignorant question - what is a
"4/4/1" crossconnect? I am not so SONET savvy.
BlueWater66 12/4/2012 | 9:47:40 PM
re: Tellabs Looks to Europe Grapsfan, thanks for the response. Then I'm guessing this is from the group in Denmark that was acquired by Tellabs from DSC (and previous to that part of NKT Transmission Group)... I think the group in Finland may also work on the same products.

In the 6400 literature, they are also emphasizing Ethernet over Sonet, hence my confusion.
grapsfan 12/4/2012 | 9:47:22 PM
re: Tellabs Looks to Europe JB, as I understand it (and I'm more of a SONET guy than an SDH guy), the "4" stands for an E4, or an STM-1...the base unit of input currency. The "1" stands for an E1, the base unit of switching in the core. The designations are actually more PDH based than SDH. Marconi and Alcatel (and others) have been making these boxes for years, and Tellabs picked up the 6300 line when they bought DSC Europe, like was mentioned previously.

North American cross-connects are labeled in the same way. A 3/1/0 cross-connect can handle DS3s & DS1s on the input, and connect at a base DS0 level...such as the Alcatel 1630, the Tellabs 532L or the Lucent DACS II. A 3/1 cross-connect switches at a DS1 level, like the Tellabs 5500, the Alcatel 1631 or the Lucent DACS IV. A 3/3 cross-connect switches at a DS3 level, like the Alcatel 1680, Tellabs 6500, or Ciena's CoreDirector.
jamesbond 12/4/2012 | 9:47:20 PM
re: Tellabs Looks to Europe A 3/1/0 cross-connect can handle DS3s & DS1s on the input, and connect at a base DS0 level...
--------------------------------------

grapsfan,

By "connect at a base DS0 level" do you mean switch DS0s from one DS1 to another. correct?

appreciate the clarification. More questions -
How does VT1.5 relate to DSx?
Can you take a stab at explaining what Polaris
is doing? The article mentioned OC192. Do they
mean they can demultiplex a DS0 out of OC192 port
stream and put it another OC192 stream?
wayland_smithy 12/4/2012 | 9:47:18 PM
re: Tellabs Looks to Europe The 4/3/1 refers to the VC-4/3/1 crossconnect capability in SDH: i.e. the virtual containers that make up the payload.
VC-11 roughly equivalent to a DS1 payload, VC-12 to an E1 payload, VC-3 to a DS3/E3 (STM-0) and VC-4 to an STM-1/E4 payload.

------------------------------------------------
JB, as I understand it (and I'm more of a SONET guy than an SDH guy), the "4" stands for an E4, or an STM-1...the base unit of input currency. The "1" stands for an E1, the base unit of switching in the core. The designations are actually more PDH based than SDH. Marconi and Alcatel (and others) have been making these boxes for years, and Tellabs picked up the 6300 line when they bought DSC Europe, like was mentioned previously.

North American cross-connects are labeled in the same way. A 3/1/0 cross-connect can handle DS3s & DS1s on the input, and connect at a base DS0 level...such as the Alcatel 1630, the Tellabs 532L or the Lucent DACS II. A 3/1 cross-connect switches at a DS1 level, like the Tellabs 5500, the Alcatel 1631 or the Lucent DACS IV. A 3/3 cross-connect switches at a DS3 level, like the Alcatel 1680, Tellabs 6500, or Ciena's CoreDirector.
grapsfan 12/4/2012 | 9:47:07 PM
re: Tellabs Looks to Europe > Briefly (and don't any serious SONET-heads
> get super-technical on me, I know I'm skipping
> some steps), a VT1.5 is to a DS1 as a DS3 is
> to an STS-1. An STS-1 can be channelized into
> 28 VT1.5 payloads. A DS3 can be channelized
> into 28 DS1 payloads.

Oops...read the second sentence. I got the ratio backwards. It should look like this (to use SAT-speak):

VT1.5:DS1::STS-1:DS3

I wrote:

VT1.5:DS1::DS3:STS-1


Anyone else need a stiff drink and a good nap today?
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