ATM Notes

US West's 'Nterprise rolls out ATM service

US West announced the beginning of its ATM Cell Relay Service (CRS) throughout its operating territory. The new ATM CRS service, which is provided by 'NTERPRISE Networking Services (a subsidiary of US WEST), will offer entry-level pricing for an ATM DS-3 port and access link at $1,150 per location. An ATM OC-3 port and access link is priced at $1,500 per location. According to US West, charges for inter-office transport are $30 per megabit for Class A constant bit rate (CBR) traffic and $37.50 for Class C variable bit rate (VBR) traffic. A US West press release includes uses further details on the carrier's pricing structure. The carrier also announced a multi-year expansion plan for its ATM services. Beginning in Q3 1995, US West will offer connectivity to inter-LATA markets using ISDN (B-ICI) IXC at both 45 and 155 Mbps. By 1997, US West plans to offer switched virtual circuit (SVC) support along with 622Mbps service. (Business Wire, January 30, 1995)

Unclog your local backbone with ATM

This feature article in the February edition of Datamation magazine (tel. 617/558-4281) makes the case that ATM is an extremely attractive LAN backbone solution -- that is, if you avoid "messy" aspects of the technology, such as routing, LAN emulation, IP traffic over ATM, etc. The article, which describes ATM, in general, as expensive, confusing and incomplete, does, however, recommend the current generation of products for use as a "fat pipe" for legacy LAN traffic. Basic definitions are offered for some of the concepts and acronyms (latency, buffering, PVCs/SVCs, etc.) that one is likely to encounter. In a nutshell, the "safe and sane" advice offered to LAN managers is this: add ATM interfaces to all routers that can handle ATM, remove routers that cannot and choose your ATM switches very carefully. (Datamation, February 15, 1995, p67)

Telekom ATM

04/21/94: Die Deutsche Telekom bietet im Pilotprojekt Breitband ISDN drei Geschwingkeitsstufen an: 2 Mbit/s, 34Mbit/s und 155 Mbit/s.
        Einrichtung     Monatsgebuehr
2Mb/s   1.000,-DM       2.000,-DM
34Mb/s  1.000,-DM       25.000,-DM
155Mb/s 1.000,-DM       64.000,-DM
        Ortszone        Weitzone und Internationale Verbindungen
2Mb/s   47,-DM/h        470,-DM/h
34Mb/s  350,-DM/h       3.500,-DM/h
155Mb/s 850,-DM/h       8.500,-DM/h
Verbindungen werden mit mindestens 15 Minuten tarifiert. Verbindungen unterhalb der max. Uebertragungsrate werden anteilig tarifiert.

Pacific Bell ATM

03/30/95; 45 Mb/s = $5,000 one-time installation plus $4,850 per month, including access costs [$107/Mb]; 155 Mb/s = $8,500 one-time installation plus $7,899 per month, including access costs [$50/Mb] SMDS (network, access per month; flat rate)
Mb/s    service area    Inter-LATA     Inter-State
1.17    $ 600 ($ 175)   $ 600 ($ 175)  $ 600 ($ 120)
4       $3500 ($2200)   $1100 ($2200)  $ 975 ($1800)
10      $4500 ($2200)   $1300          $1200
16      $5000 ($2200)   $1500          $1400
25      $5500 ($2200)   $1700          $1600
34      $6000 ($2200)   $1800          $1700
Frame Relay (port, access + address [$5-$15 each]) No usage or mileage charges)
        port  access
  56     $ 75 $ 50
 128     $150 $175
 384     $400 $175
1536     $500 $175
PacBell Internet service: $14.95/mo. for 20 hours, with additional hours at $.50/hr. up to a maximum monthly price of $19.95. A $9.95/mo. for 10 hours plan, with $1.00/hr. over the 10 is also planned.

Bell atlantic goes flat out to offer flat rate ATM service

The current edition of Network World ( provides greater detail on the flat rate fees Bell Atlantic plans to charge for its newly- announced ATM service (see ATM Digest v3n110). According to the article, Bell Atlantic's flat monthly fee for a DS3 connection (with 10 to 45Mbps of bandwidth) will range from US$3,000 to US$4,200; a direct fiber OC-3C connection (with 25 to 155Mbps of bandwidth) will range from US$3,800 to US$6,500; and a SONET OC-3C connection (with 25 to 155Mbps of bandwidth) will range from US$5,500 to US$8,200 -- with no usage or mileage charges. (Network World, June 17, 1996, p12)
Last modified: 1997-06-06 by Henning Schulzrinne