isdn30 and e1

carl_townshend · ‎01-30-2008

Hi all, in the UK is isdn30 and e1 the same thing, both have 30 channels, or are they different services ?

spremkumar · ‎01-31-2008

Hi Carl

I feel you are talking about ISDN PRI line which consists of 30 Channels each of 64Kbps which you can make use primarily for backup purpose.

Scenarios like a Central Office having number of remote branches which needs a backup line to the primary link. In this case at the central office instead of taking individual bri links take a PRI line and make use of the channels to provide redundant isdn connectivity to the remote locations.

Also you can make use of entire 30 Channels as a backup solution for a primary link.

regds

carl_townshend · ‎01-31-2008

is this also know as an E1 line ?

spremkumar · ‎01-31-2008

yeah

its E1-PRI (Primary Rate Interface).

regds

ziutek · ‎01-31-2008

Many providers sell the ISDN30 as a voice only 30 channel line with a telephone number attached. An E1 is usually data, and can either be a full E1 using all 30 channels, or a partial E1 which would have lower bandwidth. Be aware as not al E1 cards will do partial E1 config.