Date: Sat, 12 Apr 1997 06:48:48 -0500 From: "Jeffrey J. Mountin" <sysop@mixcom.com> To: Vincent Poy <vince@mail.MCESTATE.COM> Cc: isp@FreeBSD.ORG Subject: Re: TS Holy War (was Re: Some advice needed.) Message-ID: <3.0.32.19970412064847.00ccd15c@mixcom.com>
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At 02:36 AM 4/12/97 -0700, Vincent Poy wrote: > Hmmm, what's the difference between this and a channelized T1? PRI is ISDN w/23 usable B channels at 64K/ea and CT1 has 24 channels of 56K/ea, which is generally less expensive, sometimes by a large factor. > Hmmm, what about the offerings from Cisco since I know some of the >Regional providers used it. More expensive per port. Don't know much else, as I was raised on Livingston, but I would guess you would want support for 56K analog. Don't think you can do that easily with Cisco. > Hmmm, do most ISPs have a spare machine and mirror it since >wouldn't backups do the same thing? Dunno, but considering that even with a DAT and fast system it can take a few hours to bring a system back up and in the case of a hardware failure it might take a while to isolate it. Faster to restore customer data to a working system and system data should be similar, so it is just a matter of configuring the services. Crash recovery is a pain and best to have a few options. I have enough parts for at least 2 machines. My own box can do stand in services. The point is to be quick about switching critical services. > Hmmm but if it's a POP, why would there be outgoing calls? =) One thing that you could offer to ISDN customers is dial-back, but this depends on 2 things; one is if you pay for it and another is if they pay for. With Ameritech business ISDN customers pay per channel, per minute and we don't, so this is a service plus. >> IMHO, term servers are good for dial-in shell access. > > What about for both dial-up shell and ppp access? Guess I should clarify that for just shell access a term server is good. We have a Xylogics and some users never call PPP. The comm server has to connect to a host, which can be done with telnet or in some cases it is an option on connect, but I don't like this method. Guess this topic should have the subject of "A lot of advice offered." ;=) ------------------------------------------- Jeff Mountin - System/Network Administrator jeff@mixcom.net MIX Communications Serving the Internet since 1990
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