From: Keane, James (James.Keane@agriculture.gov.ie)
Date: Fri Jun 24 2005 - 07:05:50 GMT-3
You can use a channelised E1 controller for PRI isdn or Channelised 2mb
Here is the PRI
--------------------------------------------------------------------------------
ISDN Se4/0:15, Channel [1-31]
Configured Isdn Interface (dsl) 0
Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
30 X 64 for calls
1 X 64 for D Channel (usable by customer)
1 for Signalling (unusable by customer)
1920 + 64 + 64 = 2048
--------------------------------------------------------------------------------
Now the EI Channelised controller (same hardware)
E1 2/1 is up.
Applique type is Channelized E1 - balanced
Description: Channelised Circuit -
No alarms detected.
Framing is CRC4, Line Code is HDB3, Clock Source is Line.
controller E1 2/1
channel-group 0 timeslots 1-31
Here we have 31 different usable channels (and one unusable 64k signalling)
thats 1984 + 64 = 2048
--------------------------------------------------------------------------------
Regards
James
-----Original Message-----
From: robbie [mailto:robbie@packetized.org]
Sent: 24 June 2005 01:17
To: Group Study
Subject: Re: bandwidth of e1
Allow me to revise and extend - I mistyped 30 instead of 32.
ISDN PRI on E1 is 30 B-Channels plus 2 D-channels for signalling.
-------- Original Message --------
From: - Thu Jun 23 19:14:44 2005
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Date: Thu, 23 Jun 2005 19:14:43 -0500
From: robbie <robbie@packetized.org>
Reply-To: robbie@packetized.org
E1 bandwidth is 30 channels (as opposed to 24 channels on a T1/J1) of
either 56kbps or 64kbps (usually 64kbps these days), making it 2.048Mbps.
John Matus wrote:
> is the bandwidth of E1 2.048 mbs...? or is it doube a T1 @ 3.088?
>
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-- robbie at packetized dot org <short sig army - one line sigs since 1993>
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