From: Haresh Rane (hnrane@xxxxxxxxxxx)
Date: Mon Aug 07 2000 - 11:46:12 GMT-3
Hi!
I heard that one can simulate ISDN switch on a Cisco router running IOS ver
12.1.0 T . Any one have any idea how it might be working.
Harish
From: "mail.jetbn.net" <skenw@jetbn.net>
To: "Ola Aiyegbusi" <ola@compath.com>, <ccielab@groupstudy.com>,
<cisco-cert@cciecert.com>
Subject: Re: [sc] back-to-back BRI
Date: Sat, 5 Aug 2000 16:36:04 -0400
Sorry. Walter is right. You need a switch to handle the ISDN protocols.
That's where the ISDN sim comes in. I wish you could use a router to switch
ISDN the way you can with Frame Relay.
----- Original Message -----
From: Walter Chen
To: Ola Aiyegbusi ; ccielab@groupstudy.com ; cisco-cert@cciecert.com
Sent: Thursday, August 03, 2000 2:13 PM
Subject: RE: [sc] back-to-back BRI
I do not think so. This is just like you try to connect two phones
with back-to-back RJ-11 cable to "simulate" a PSTN network. Do you
think it will work? :-)
The key concept in all switched networks (cell-switched or packet
switched) is that you need a switch (a DCE device) in between the
end (DTE) devices. In ISDN protocols, there is no TE-to-TE
interface defined. (Review the ISDN protocols' S/T/U interface
definitions and functions.)
Walter Chen
Sr. Network Engineer (CCNA, CCNP 2.0, CCIE candidate)
Microtech-Tel
-----Original Message-----
From: Ola Aiyegbusi [mailto:ola@compath.com]
Sent: Wednesday, August 02, 2000 12:43 PM
To: ccielab@groupstudy.com; cisco-cert@cciecert.com
Subject: [sc] back-to-back BRI
Can you connect two BRI or PRI interfaces back to back to simulate ISDN
or connect BRI to PRI directly? I don't have an ISDN simulator but have BRI
and PRI interfaces on my routers
Ola Aiyegbusi
Network Engineer CCDP, CCNP (Voice Access Specialization)
ComPath Inc.
10201 Lee Hwy Suite 140 Fairfax VA 22030
Phone: 703-383-9550 Ext. 122
Pager: 1-888-857-5620
Cell: 703-395-8808
Fax: 703-383-1369
Email: ola@compath.com
Web: http://www.compath.com
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