Also sprach Mark Thornton
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.
Yeah...I looked at some of the Adtran stuff...it looks like they have some rather intelligent "CSU/DSU's"...up to the point of doing IP routing to some degree. It looks like it can seriously slice and dice a connection any way you want it...with some of their equipment, it looks like it'll even drop a single DS0 out of a DS3 like this. I've called the consultant dude working on this whole setup to try to find out the actual Adtran unit that they're using, in the hopes that it might tell me a bit more about the setup they're doing and how it might affect us.
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.
Ugh...don't get me started. I suggested a channelized T1, to pull of channels to do this...they already had the PRI in place. I suggested taking the PRI into the PBX and then provision a BRI out of the PBX to a BRI router and do a nailed dial-up connection like you suggested. They already had the Cisco 1600 and didn't want to purchase the BRI card for it, and already had the Adtran to break out the two PRI channels. *cue rant about people ordering equipment and services before knowing if it will work end-to-end or not* *sigh* Anyway...I'm not wanting to put a whole lot of work into this, since the customer and consultant pretty much have their minds made up on how they want to do this, and aren't willing to consider suggestions on better ways to handle it, but I thought I'd ask to see if you could set aside ISDN leased line channels on a DSP. I know such a thing as an ISDN leased line exists, and its not a dialed connection, but didn't know if the DSPs supported it. -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.