Are you sure the Adtran is set up to add/drop from a PRI? That would put a lot of intelligence in the Adtran that is not normally included in a csu/dsu in order to deal with the D channel call setup stuff. It is my understanding that a PRI isn't really sliced up just like a CT1. We provide the same functionality to a few of our clients using an Ascend router configured in the 'nailed' mode. This essentially creates a leased line between their router and the dsp, and has the advantage of moving to other PRI's if one of them fails for any reason. We set up our end to never dump that call for any sort of timeout. Mark Thornton San Marcos Internet, Inc. 512-393-5300 ----- Original Message ----- From: "Jeff Mcadams" <jeffm@iglou.com> To: <usr-tc@lists.xmission.com> Sent: Wednesday, September 20, 2000 2:20 PM Subject: (usr-tc) ISDN leased line on DSP?
OK...this is a bizarre one..
I have a customer wanting to upgrade from 2 channel ISDN, to a 2 channel leased line type of set up (don't ask, I'm not sure why). In any case, they have an ISDN PRI into their location to support their voice traffic on their PBX. What they want to do (and apparently have an Adtran unit to do this on their end) is to pull two channels off the PRI and hand them to a cisco 1600 as a nailed up data connection (ie, no dialing). I know that you can set up an ISDN leased line connection like this, but I've never seen anyone pull two channels off a PRI to do this. *shrug*
In any case...this setup is giving our mutual CLEC telephone company fits on how to do this. Being a leased line setup, my initial response was to say, "OK, drop that to me on a frac-t1 connection to my cisco 3640 down there." I *think* this can be made to work...the tech dude at the telco (who's pretty sharp and friendly) thinks he can get this delivered to my 3640 on a frac-t1...
Now...I like our telco down there a lot...they're good guys, so I want to try to help them out if I can...and besides...I wanna do this setup without doing alot of really weird provisioning, as that tends to cause problems down the line. So, my question boils down to...
Can a DSP be made to use two channels as an ISDN leased line connection? My thinking being that if I could peel off two channels of one of my PRIs, it might be easier, simpler, more reliable, etc. to take my two channels and patch them through the switch to these folks two channels, rather than having to add/drop mux it out somewhere, convert it to a frac-t1, and proly several other weird gyrations, to get the connection to me. Not being a telco tech, I'm not sure if this would be easier to do or not...I can't imagine it would make it harder, but who knows. But before I offered to the telco tech dude, I wanted to make sure the DSPs would indeed do this. The impression I've gotten from what I've looked at so far, is that no, the DSPs *won't* do this...but I'd like to get some confirmation from folks that know more about this than I.
Thanks!
P.S. Still no response from anyone of any signficance about the news server on totalservice. :/ -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456
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