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- The LOD/H Technical Journal: File #12 of 12
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- Network News & Notes
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- ISDN passes first real-world test (ComputerWorld, Nov. 24th, 1986)
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- After at least five years development work and prototyping on vendors'
- premises, the first operational Integrated Services Digital Network involving
- customer premises equipment was successfully tested.
-
- In two initial tests, Arizona government officials transmitted both voice
- and data between their offices through a Northern Telecom, ISDN digital switch
- residing on Mountain Bell's Phoenix Central Office.
-
- The trial offers participating vendors the opportunity "to evaluate ISDN
- technology and determine customer benefits outside the research lab". Customer
- premises equipment used in the trial is still in the prototype phase, however.
- No time frames for introducing commercial offerings were discussed.
-
- In the first of two ISDN applications demonstrated at a news conference,
- Don Cline, Mountain Bell's Arizona VP and CEO, placed a five minute voice call
- at the Phoenix Civic Plaza to Arizona Secretary of State Rose Mofford and
- simultaneously transmitted a certificate commemorating the event. The
- transmissions were handled by Northern Telecom's Meridian digital telephone
- sets and workstations and passed through a Northern Telecom DMS-100 ISDN
- switch as Mountain Bell's Phoenix CO.
-
- In the second ISDN application an NCR PC was used to access and alter a
- driver's record residing on an Amdahl 5850 host in the Motor Vehicles Division
- from two blocks away.
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- Sending both voice and data in digital form over the same twisted-pair
- telephone wiring is more reliable than analog communications and in the long
- run will save a lot of money. Workstations linked over an ISDN basic interface
- can be moved as easily as you can move telephones, as opposed to having to
- restring coaxial cable.
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- Long-awaited McDonald's ISDN trial to start in two weeks (ComputerWorld 12-1)
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- During the second user-site ISDN trial, scheduled to begin Dec. 16, at
- least four rival communications equipment vendors will test whether their
- terminal interfaces conform closely enough to the telecommunications standard
- to communicate.
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- McDonalds's Corp, agreed more than two years ago to participate in the
- trial, which is sponsored by Ameritech divested BOC Illinois Bell, because
- the fast-food giant wanted the emerging technology for its own use.
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- Slated to continue at least through early 1988, the trial ISDN network
- will link a variety of workstations and hosts at McDonalds headquarters located
- in Oak Brook, Ill., through a Northern Telecom DMS-100 ISDN switch residing at
- Illinois Bell's CO.
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- The company will start with 50 basic-rate digital subscriber lines and
- gradually ramp up to a projected 300 to 400 lines by the end of 1987. The
- basic interface defines two 64K bit/sec B channels and a separate 16K bit/sec
- D channel to carry data packets and signaling information.
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- All the products used in the trial are designed to communicate with AT&T's
- 5ESS switch. While the basic ISDN interface is sufficiently well defined to
- permit different vendor's implementations to communicate, different vendors'
- CO switch products still retain software incompatibilities.
-
- The way terminal adapters communicate via ISDN is still defined by the CO
- switch, terminals can be modified to communicate with either AT&T's or Northern
- Telecom's ISDN switch, but you can't just unplug a terminal and move it from
- one switch to the other.
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- Originally slated to be the first ISDN trail to begin operations, the
- project was delayed for approximately a month while AT&T finished implementing
- software on the 5ESS ISDN switch at Illinois Bell's CO. While the hardware used
- in AT&T's ISDN switch is commercial, the software is coming slowly.
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- Growth forces split in 305 area code
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- Southern Bell announced that rapid growth will force them to split the 305
- area code in two, with Broward, Dade, and Monroe counties remaining 305 and
- Palm Beach County to Orlando becoming 407. "If we didn't make the split we'd
- literally run out of phone numbers".
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- The split is slated to take place in April 1988, making 407 Florida's
- fourth area code and the first new one in 23 years.
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- 617 currently with 533 exchanges will be splitting off into 508 in 1988.
- 303 will be split with Denver remaining 303 and 719 will cover Colorado
- Springs.
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- This leaves the following NPA's open: 708, 903, 908, 909, 917
- not including X10 where X is 4,6,7,8, and 9.
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- Secret Service Buys Telenet Network (Communications Week)
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- US Sprint Communications Corp's Telenet Communications Corp subsidiary
- has signed a $35 million multiyear contract to build a private data network
- for the US Secret Service.
-
- The contract marks Telenet's first major private network coup in the
- highly competitive market of sensitive government communications. While
- telenet would not reveal the extensiveness of the network or its applications,
- the Secret Service acknowledges having 4,300 employees and about 100 locations
- in the United States.
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- Data transmission plays a significant role in the Secret Service's
- mandate, which beyond guarding the president includes the investigation of
- counterfeiting, securities and electronic funds transfer violations and credit
- card fraud.
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- Encryption or other security measures are expected to be employed in the
- new system, but telenet does not provide those functions.
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- In addition to its public network, Telenet has sold about 70 private
- networks, about 100 hybrid networks using public and private capabilities, and
- many hundreds of virtual private networks.
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- It will take more than a year to complete construction.
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- New Social Security Net (Communications News)
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- The US Social Security Administration will install new modems and
- diagnostic and control systems as part of a program to establish its Data
- Communications Utility Network, which covers 1500 offices in the US.
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- The new network will handle interactive Social Security claims processing.
- Equipment for this phase is being provided by Racal-Milgo in an $11 million
- contract.
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- Allnet extends southward with big capacity purchase (Communications News)
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- Through the purchase of capacity from three providers, Allnet
- Communications Corporation has added 4,000 miles of fiber-optic route to its
- network.
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- In a $36 million deal, the company purchased capacity, in the southeastern
- US from Microtel, SouthernNet and Southland FiberNet. All three are members of
- the National Telecommunications Network.
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- Southern Cal to link 11,000 users on net (Communications News)
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- The University of Southern California is in the process of establishing a
- $21.8 million University Communications Network that will link more than 11,000
- users throughout 185 buildings.
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- Voice and data will be transmitted over the network, which will use an
- AT&T System 85 PBX, a system of local-area networks, and an intercampus
- microwave network.
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- Approximately 12 miles of fiber-optic cable will be used to link 21 USC
- schools. The system will include 10 Information System Networks and 504
- Starlan networks.
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- The telecommunications project is scheduled for completion in March of
- 1988.
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- Dallas to use Cell System (Communications News)
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- The city of Dallas has begun a $2.9 million program to outfit personnel in
- various city departments with mobile cell roaming data communications systems.
- The network will consist of 545 Mobile Data International MDI 9031 mobile data
- terminals with the 8020 integral data radio, 20 6000 series hand-held portable
- data terminals, related base equipment and automatic zone transfer between six
- calls using 11 radio frequencies with frequent re-use.
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- Full roaming between the cell sites will be handled on a transparent basis
- to the operator.
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- Singapore in Net Upgrade (Communications News)
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- The Republic of Singapore will install two digital international gateway
- exchanges as part of a total network upgrade program.
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- The Telecommunications Authority of Singapore and AT&T International will
- provide AT&T's 5ESS digital switch. The company said this is the first
- application of the 5ESS as an international switching point.
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- The first switch will be handed to the authority in April of 1988 and the
- second in April of 1989.
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- That's it for Network News & Notes, some of these articles may not be too
- interesting, but each has some significance as in interesting systems to
- hack, box, defeat or find more information about. If you know of any
- interesting news articles be sure to drop them in mail.
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-