[ih] SATNET (seismic data, Norway, UK)

[Johnny RYAN]

That is exactly the information I wanted. Thank you!

--
My Next Book... http://johnnyryan.wordpress.com/books/net-history-2010/




On Sat, Aug 15, 2009 at 1:46 PM, Vint Cerf<vint at google.com> wrote:
> we piggy-backed on the original NORSAR satellite link.
>
> before UCL was put up on the ARPANET, only the NORSAR facility was connected
> by satellite.
>
> Bob Kahn worked out an arrangement to increase the total capacity of the
> system and also arrange for UCL to be connected to the ARPANET.
>
> initially NORSAR was connected to the ARPANET by a dedicated satellite
> connection. The capacity was increased and UCL was connected to NORSAR by
> land line.
> The satellite ground station was at Tanum, Sweden I think.
>
> Later, the Packet Satellite system was fielded via INTELSAT IVA and UCL was
> connected to the SATNET and the land line to NORSAR was removed. UCL was
> connected to the SATNET through a ground station at Goonhilly Downs, UK.
> NORSAR/NDRE was re-connected to the ARPANET by way of SATNET which also used
> a ground station at TANUM.
>
>
>
>
> On Aug 15, 2009, at 8:32 AM, Johnny RYAN wrote:
>
>> I have been confused by the distinction between A) the link to NORSAR
>> and UCL from 1973 and B) the SATNET links to same from September 1975
>> and late 1977. This is particularly confusing since the NORSAR link
>> seems to have gone via the satellite earth station at Tanum in both
>> cases (pre and during SATNET).
>>
>> Johnny
>>
>> --
>> My Next Book... http://johnnyryan.wordpress.com/books/net-history-2010/
>>
>>
>>
>>
>> On Sat, Aug 15, 2009 at 10:22 AM, Vint Cerf<vint at google.com> wrote:
>>>
>>> bob's paper will help. Larry Roberts initiated the program, Bob insisted
>>> that the network be separable from ARPANET and that was part of his very
>>> significant effort to develop the concept of "open" networking. We needed
>>> packet satellite to serve ship-to-ship and ship-to-shore data
>>> communications
>>> (in our conceptual model of using packet networking to aid in
>>> computer-based
>>> command and control). Packet Radio was needed for ground and air mobile.
>>> ARPANET was the prototype for wireline, land-based command and control.
>>> These three networks, plus the ethernet invented at Xerox PARC formed the
>>> basis for much of the Internet's architecture.
>>>
>>> vint
>>>
>>>
>>> On Aug 14, 2009, at 9:42 PM, Johnny RYAN wrote:
>>>
>>>> please ignore my last re Kahn's paper (found it here
>>>>
>>>>
>>>> http://ia300230.us.archive.org/3/items/TheIntroductionOfPacketSatelliteCommunication/)
>>>>
>>>>
>>>> --
>>>> My Next Book... http://johnnyryan.wordpress.com/books/net-history-2010/
>>>>
>>>>
>>>>
>>>>
>>>> On Fri, Aug 14, 2009 at 10:51 PM, Johnny RYAN<johnnyryan1 at gmail.com>
>>>> wrote:
>>>>>
>>>>> Dear Vint,
>>>>> I had better examine this more to understand the reasoning behind
>>>>> SATNET
>>>>> any pointers or source suggestions would be very welcome!
>>>>> ( I cant find a text online for R.E. Kahn, "The Introduction of Packet
>>>>> Satellite Communications," National Telecommunications Conference,
>>>>> Nov. 1979, referenced in your RFC 829 )
>>>>> Johnny
>>>>>
>>>>> --
>>>>> My Next Book... http://johnnyryan.wordpress.com/books/net-history-2010/
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Fri, Aug 14, 2009 at 9:53 PM, Vint Cerf<vint at google.com> wrote:
>>>>>>
>>>>>> well not exactly. the seismic stuff had its own dedicated circuit. Bob
>>>>>> Kahn
>>>>>> successfully argued that we could provide higher speed service by
>>>>>> sharing
>>>>>> the satellite capacity between the seismic data and the internet data
>>>>>> and
>>>>>> splitting the costs. But the seismic data itself was not necessarily a
>>>>>> driver of packet satellite as a technology.
>>>>>>
>>>>>> v
>>>>>>
>>>>>> On Aug 14, 2009, at 4:03 PM, Johnny RYAN wrote:
>>>>>>
>>>>>>> Dear All,
>>>>>>>
>>>>>>> Thanks you for your responses on Carterfone. But if I may be so bold,
>>>>>>> one other...
>>>>>>>
>>>>>>>> From papers of Peter Kirsten and Robert Kahn, it looks like seismic
>>>>>>>
>>>>>>> data transfer was an important reason to pursue SATNET, presumably
>>>>>>> particularly so in the context of the Mansfield Amendment --- were
>>>>>>> there other important reasons?
>>>>>>>
>>>>>>> The sequence for SATNET as I understand it is
>>>>>>>
>>>>>>> ------------------
>>>>>>> Background events re seismic data....
>>>>>>> 1957 - 'Rainier', US first underground nuclear test, detected by
>>>>>>> seismic instruments across the globe
>>>>>>> 1963, Limited Test Ban Treaty, 116 nations commit to underground
>>>>>>> testing
>>>>>>> 1970, US starts recieving seismic data from NORSAR at Kjeller, Norway
>>>>>>> (seismic data went by cable from Norway to UK and then by satellite
>>>>>>> to
>>>>>>> US).
>>>>>>> 1972, seismic data goes to US through Sweden by Satellite
>>>>>>>
>>>>>>> -------------------
>>>>>>> 1973, ARPANET connects by satellite to UCL and University of Hawaii
>>>>>>> 1975, SATNET initiated - US link to UK (British Post Office and UCL)
>>>>>>> using Intelisat IV
>>>>>>> 1977, Norweigan Defense Establishment link by satellite
>>>>>>>
>>>>>>> Does this sound right?
>>>>>>>
>>>>>>> Johnny
>>>>>>>
>>>>>>> --
>>>>>>> My Next Book...
>>>>>>> http://johnnyryan.wordpress.com/books/net-history-2010/
>>>>>>
>>>>>>
>>>>>
>>>
>>>
>
>