E1 is a European T1. T1/E1 is the transport. PRI is the protocol. PRI on an T1 id 23B+D, PRI on an E1 is 30B+D.
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Eric Wieling > Sent: Wednesday, February 23, 2005 7:50 AM > To: Eric Bishop; Asterisk Users Mailing List - Non-Commercial > Discussion > Subject: Re: [Asterisk-Users] Difference between E1 and PRI > > > Eric Bishop wrote: > > > Hi all, > > > > I have seen the term E1 and PRI used interchangably when > referring to > > a voice service with 30B channels and 1 D channel. Are they just > > different terms for the same thing or is there some technical > > difference. Even Newton's telco dictonary seemed a bit fuzzy on this > > topic. I have seen it said the PRi is a protocol that runs on top of > > E1. Is this true? > > Think of E-1 as Ethernet (transport) and PRI as IP (protocol). > > You could also think of E-1 as IP and PRI as TCP. > > You can also think of E-1 as TCP/IP and PRI as FTP. > > > > _______________________________________________ > Asterisk-Users mailing list > [email protected] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
