Tarek, Good point about the overuse of the term "T-1." Generically, DS-1 (digital signal level 1) implies a particular structure (24 x 64 kbps DS0s, etc) while T-1 refers to the facility (bipolar transmission of 1.544 Mbps, line code, etc). There are finer points to be debated about the distinction between the two, but suffice it to say that T-1 does not necessarily imply DS-1 (although the two are somewhat synonomous in my world) and it certainly doesn't apply to ISDN PRI exclusively.
Scott Tarek Sabry wrote: > > No but ISDN PRI and T1 PRI ARE used interchangeably. You need > to distinguish > between 2 things here: T1 PRI and T1 CAS (Channel-Associated > Signalling). So > T1 is used to describe the rate of the line here. A better way > is to use the > term DS1 because T1 actually refers to the signalling scheme. > > Normally when people refer to just "T1", they mean T1 CAS. > > Tarek > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On > Behalf Of > Brian Zeitz > Sent: Tuesday, March 12, 2002 1:22 PM > To: [EMAIL PROTECTED] > Subject: RE: T1 Vs ISDN PR [7:37983] > > > OK, I am just confused, is a T1, and a T1 PRI are the terms used > interchangeably? What about ISDN PRI? Hope you don't mind newbie > questions :) > > -----Original Message----- > From: Sujal G. Ajmera [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, March 12, 2002 2:26 PM > To: Brian Zeitz; [EMAIL PROTECTED] > Subject: RE: T1 Vs ISDN PR [7:37983] > > PRI gives you 23 channels of 64K each.. Which is equivalent to > a T1 - > 1.5Mb > > For a VPDN, users could dial into a PRI > > HTH > > Suj > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On > Behalf Of > Brian Zeitz > Sent: Wednesday, March 13, 2002 12:31 AM > To: [EMAIL PROTECTED] > Subject: T1 Vs ISDN PR [7:37983] > > > Is there any drawbacks to getting a T1 PRI vs. a regular T1 (I > think > that's called channelized). I am not sure of the drawbacks of > using PRI, > with VPN, and things like that work fine over PRI? Is PRI just > like a > regular T1? The reason I am asking is I tried to get a T1 and I > was told > I could only get PRI ISDN. Any help or links for this would be > appreciated. > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37997&t=37983 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
