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RE: what's channellized E1?

  • From: Jan Czmok
  • Date: Fri Sep 18 06:42:06 1998


On 18-Sep-98 Yu Ning wrote:
> Hi friends,
> A very very basic question:
> What does "channellized E1" mean? What's its difference from a "normal"
> E1 connection?
> reply to my mail box, if you think such message is too basic posting 
> on nanog, thanks.
> regards,
> Yu Ning
> -- 
> ___________________________________________*
> Yu Ning
> ATM R&D Centre of
> BUPT (Beijing U. of Posts&Telecom)
> Beijing (ZIP:100876, MBox:147#), P.R.China 
> Ideas ONLY reflect my own views,:-)
> ___________________________________________

Hi all!

Okay a bit clearing about E1:

E1 is Linespeed 1984 or 2048.

Unchannelized E1 means clear bandwidth of 2048 unstructured
channelized e1 means trunk is divided by 32 Timeslots; Timeslot 0 is used for
syncronization of the other timeslots and cannot be used for data transmissions.

e.g.: unchannelized e1 is "point-to-point" but 
channelized e1 can mean "point-to-multipoint"

Hope that clear it a bit

Jan Czmok

- ---
Jan Czmok                                 
Senior Network Engineer
IPF.NET Service Provider GmbH

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