------------------------------ From: farber@nynexst.com (Martin Farber) Subject: Re: ISDN on DEC Alpha Computers Date: 19 Dec 1994 13:40:11 GMT Organization: Nynex Science & Technology, Inc. Reply-To: farber@nynexst.com In article 6@eecs.nwu.edu, dalef@bu.edu (Dale Farmer) writes: > Today I was building a DEC Alpha workstation for a customer and > noticed on the back a little jack labeled ISDN, and packaged with it > was a cheapie Plantronics headset that plugs into the headset jack > right next to the ISDN jack. Haven't had a chance to look at the > relevent portion of the manual yet, but it seems to have ISDN built > right into the motherboard of the thing. Methinks DEC may be > getting a little optomistic about how widespread ISDN availability is, > or is there some deadline coming up that I haven't heard about? Sun Sparcs already have ISDN ports, but no parallel ports -- bright huh? Sincerely, Martin Farber Independent Oracle Consultant "A Jack of all trades and a slave to one." NYNEX Science & Technology 500 Westchester Ave, Rm 1B-23 White Plains, NY 10604 ----------------- email: farber@nynexst.com Voice: 914/644-2656 FAX: 914/644-2216 ------------------------------ From: minerva.robadome.com!sheldonk@pmail.com (Sheldon Kociol) Subject: Re: They Hacked Me! !@#$%^%^$ Date: 19 Dec 1994 22:08:44 GMT Organization: ROLM - A Siemens Company Reply-To: minerva.robadome.com!sheldonk@pmail.com The ROLM CBX (9005.2.79 bind and up) has a system parameter PM_XFR_TO_CO. This parameter set to no will not let a external callers (ie. DID) transfer out of Phonemail to an external type of trunk (regardless of COS). You need to check the trunk types which the hackers are calling out on (possible CDR will tell you the trunk). Trunks configured as ties are internal even if physically they are external. This parameter is global, thus if there is a need to transfer exteranl, configuration is much more complicated and risky. Depending on the release of Phonemail, there are simple control to one access code to the more current releases of Phonemail which has restrict tables (I am a CBX person, not a Phonemail person). This is redundant to the CBX control. I would suggest that you escallate to the branch (you might have already done this). This problem needs escallation to the security manager. They will be able to review your configuration to let you know any possible holes in security. You are very lucky that AT&T was on the ball. ------------------------------ From: holland@perot.mtsu.edu (Mr. James Holland) Subject: Re: They Hacked Me! !@#$%^%^$ Date: 19 Dec 1994 22:23:33 GMT Organization: Middle Tennessee State University, Murfreesboro, Tennessee In castaldi@heroes.rowan.edu writes: > I don't believe it - they hacked me? > I have a ROLM 9751 and phonemail. I have all of the DID classes of > service low, transfer tables and all of the other standard stuff. My > question is, EXACTLY how do you go through phonemail to get an outside > line. I tried every conceivable combination of transfers in and out > several times and I could never get through? If I know hew they are > doing it I could plug it. > Luckily, they spend most of their time trying to get through and > little time on my T-1. The callers were using stolen calling cards > from NYC payphones to call an extension in my switch that since there > was no answer went into phonemail. (Thanks AT&T for the clue -- they > called me to tell me this after about ten hours of activity) I can't > figure this out? Any 'hackers' out there? Probably not, but just maybe ... on phonemail, make sure you don't have something as simple as extension 9 setup with the ability to transfer to it. I hit that as an extension on a customer's phonemail system once and was greeted with a dialtone (theirs!) ... that's the story I'm gonna stick with at least! :-) James Holland holland@knuth.mtsu.edu ------------------------------ End of TELECOM Digest V14 #457 ****************************** ÿ@FROM :telecom@delta.eecs.nwu.edu úÿ(Continued from last message) pairs. I'm not sure why we're not getting one cable with several pairs in it (that's what the phone contractor recommended): perhaps they cost more than two seperate cables? >> The fiber costs $.45 per foot and the copper costs ~$1.10/foot. The >> distance is 3000 ft. > What's the installation cost? I think the total materials and rental fees are $20,000. We're installing it with in-house construction people: We're a seasonal business and have to keep people employed during off-season so the labor is basically free (otherwise it would probably be another $10,000). Also there are going to be 9 manholes along the trench, so installing more cables later may not be that big of a deal. I was amazed at how easily we got permits for digging the trench on the public road-side. I think we're friendly with the local town here. The cost is actually pretty low. For $20,000 we also could have gotten a microwave link, but with only a single T1, and we'd have to get a license. Spread-spectrum was the cheapest for the computer network, but it doesn't help with the phone. We already rent 8 or so "local loops" for about $15 each per month. To upgrade to 45, rental would be $8000 a year. I think it would be cheaper to rent T1s, but then we need expensive multiplexing equipment as well. The phone system itself is supposed to cost around $50,000. I think that covers about 150 phones and a radio link (we're a greenhouse business: many of the employees carry radios with them so they don't have to walk to a phone whenever there's a call). >> I plan on using these little $100 boxes which convert ethernet to >> fiber and use some extra PCs w/linux as bridges. Does anyone know about the boxes I'm mentioning here? I want to know if they act like bridges: so that the ethernet length limit can be exceeded. I would like to avoid buying expensive hubs if possible (having a PC act as hub is what I'm planning on now, but if these boxes do it anyway, all the better). >> I would like to know if there are boxes which take both ethernet and >> T1 (or whatever signal a pdx is likely to have) and multiplex them >> together onto the fiber so that the copper cable is not needed. > For PBX extensions, the economics of putting in mux/demux says copper > is cheaper, until you get into the line capacity that justifies a > remote switching equipment and trunking. Yeah, that's what I gather. I think with all that copper we can get away with a single PBX- although I don't know how digital/multi-line phones are going to work. > At that point you'll be glad to have a copper pair to run a POTS > line over for your modem. Yeah, also it's good to have copper for any other simple signalling application that might come along. > We originally ran T-1 between two buildings to serve remote extensions. > When we 'buried' cable to support a fiber network link, we found that > the costs more than justified putting in 600pairs and ripping out the > t-1s'. The biggest cost was digging the trench :-), and ours wasn't as > long as yours will be. My biggest problem with copper is that I'm worried that it will only exasperate our already serious lightning problem even further. We usually lose an expensive 30 HP pump motor and several thousand dollars worth of PBX pieces about once every two years. jhallen@world.std.com (192.74.137.5) Joseph H. Allen ------------------------------ From: farber@nynexst.com (Martin Farber) Subject: Re: ISDN on DEC Alpha Computers Date: 19 Dec 1994 13:40:11 GMT Organization: Nynex Science & Technology, Inc. Reply-To: farber@nynexst.com In article 6@eecs.nwu.edu, dalef@bu.edu (Dale Farmer) writes: > Today I was building a DEC Alpha workstation for a customer and > noticed on the back a little jack labeled ISDN, and packaged with it > was a cheapie Plantronics headset that plugs into the headset jack > right next to the ISDN jack. Haven't had a chance to look at the > relevent portion of the manual yet, but it seems to have ISDN built > right into the motherboard of the thing. Methinks DEC may be > getting a little optomistic about how widespread ISDN availability is, > or is there some deadline coming up that I haven't heard about? Sun Sparcs already have ISDN ports, but no parallel ports -- bright huh? Sincerely, Martin Farber Independent Oracle Consultant "A Jack of all trades and a slave to one." NYNEX Science & Technology 500 Westchester Ave, Rm 1B-23 White Plains, NY 10604 ----------------- email: farber@nynexst.com Voice: 914/644-2656 FAX: 914/644-2216 ------------------------------ From: minerva.robadome.com!sheldonk@pmail.com (Sheldon Kociol) Subject: Re: They Hacked Me! !@#$%^%^$ Date: 19 Dec 1994 22:08:44 GMT Organization: ROLM - A Siemens Company Reply-To: minerva.robadome.com!sheldonk@pmail.com The ROLM CBX (9005.2.79 bind and up) has a system parameter PM_XFR_TO_CO. This parameter set to no will not let a external callers (ie. DID) transfer out of Phonemail to an external type of trunk (regardless of COS). You need to check the trunk types which the hackers are calling out on (possible CDR will tell you the trunk). Trunks configured as ties are internal even if physically they are external. This parameter is global, thus if there is a need to transfer exteranl, configuration is much more complicated and risky. Depending on the release of Phonemail, there are simple control to one access code to the more current releases of Phonemail which has restrict tables (I am a CBX person, not a Phonemail person). This is redundant to the CBX control. I would suggest that you escallate to the branch (you might have already done this). This problem needs escallation to the security manager. They will be able to review your configuration to let you know any possible holes in security. You are very lucky that AT&T was on the ball. ------------------------------ From: holland@perot.mtsu.edu (Mr. James Holland) Subject: Re: They Hacked Me! !@#$%^%^$ Date: 19 Dec 1994 22:23:33 GMT Organization: Middle Tennessee State University, Murfreesboro, Tennessee In castaldi@heroes.rowan.edu writes: > I don't believe it - they hacked me? > I have a ROLM 9751 and phonemail. I have all of the DID classes of > service low, transfer tables and all of the other standard stuff. My > question is, EXACTLY how do you go through phonemail to get an outside > line. I tried every conceivable combination of transfers in and out > several times and I could never get through? If I know hew they are > doing it I could plug it. > Luckily, they spend most of their time trying to get through and > little time on my T-1. The callers were using stolen calling cards > from NYC payphones to call an extension in my switch that since there > was no answer went into phonemail. (Thanks AT&T for the clue -- they > called me to tell me this after about ten hours of activity) I can't > figure this out? Any 'hackers' out there? Probably not, but just maybe ... on phonemail, make sure you don't have something as simple as extension 9 setup with the ability to transfer to it. I hit that as an extension on a customer's phonemail system once and was greeted with a dialtone (theirs!) ... that's the story I'm gonna stick with at least! :-) James Holland holland@knuth.mtsu.edu ------------------------------ End of TELECOM Digest V14 #457 ******************************