Thread View: comp.protocols.iso
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Started by roseberry
Wed, 04 Nov 1992 21:05
Obtaining X.25 Numbers for Private Net
Author: roseberry
Date: Wed, 04 Nov 1992 21:05
Date: Wed, 04 Nov 1992 21:05
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We are in the process of privatizing our X.25 network. I know Sprintnet's addresses start with 3110 and that networks in the US usually start with 31xx. Where would we apply to get our own network number assigned ? Thanks for any pointers. - Bert Roseberry US Coast Guard roseberry@taney.uscghq.uscg.mil
Re: Obtaining X.25 Numbers for Private Net
Author: Warwick Hunter
Date: Thu, 05 Nov 1992 10:47
Date: Thu, 05 Nov 1992 10:47
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All X.25 DTE addresses and telephone numbers are allocated according to CCITT standard X.121. All I can suggest is that you contact the CCITT. Perhaps your local telephone company can suggest where you might turn. -- Warwick Hunter. Networks and Communications, Digital Equipment Corporation, Bond University QLD Australia.
Re: Obtaining X.25 Numbers for Private Net
Author: Ducks? Why do they have ducks?
Date: Thu, 05 Nov 1992 16:40
Date: Thu, 05 Nov 1992 16:40
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In article <1992Nov4.160542.88@taney.uscghq.uscg.mil>, roseberry@taney.uscghq.uscg.mil writes... > > We are in the process of privatizing our X.25 network. > I know Sprintnet's addresses start with 3110 and that > networks in the US usually start with 31xx. Where would > we apply to get our own network number assigned ? > Private X.25 networks don't have assigned network numbers. The number you're thinking of is an X.121 address. X.121 addresses begin with a DNIC, Data Network Identification Code. DNICs for the United States are passed out by either Dep't of State or the FCC, I can't remember which. These folks are working from allocations made by the CCITT. However, you can't have one, because those are only for public networks. Really, you don't need one, anyway. It's only useful if you connect to a public X.25 network. So, you say, "but we do want to connect to a public X.25 network." In that case, the United States has a thing called "Shared DNICs," which was set up by the FCC and ANSI as part of an inquiry made a couple of years ago when we noticed that we were running out of numbers. Under the Shared DNIC principle, you get a range of X.25 numbers under your public network provider DNIC. Tough if you want to change providers. So, unless you have folks OUT of your X.25 network who need to make data connections (i.e., not PAD connections) INTO your X.25 network, I wouldn't bother. Now, if you were the Canadian Coast Guard, things would be different... Another possibility for you is to grab one of the "ships at sea" DNICs, which I've never understood what they were for, but if they apply to anyone, they might apply to you (look in the back of X.121 to see). Joel M Snyder, 1103 E Spring Street, Tucson, AZ, 85719 Phone: 602.882.4094 (voice) .4095 (FAX) .4093 (data) BITNET: jms@Arizona Internet: jms@arizona.edu SPAN: 47541::telcom::jms Yow! Am I in Milwaukee?
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