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To: JGoren who wrote (5586)	10/18/1999 5:11:00 PM
From: Kenneth E. Phillipps	Read Replies (1) \| Respond to of 12823

SBC DROPS DSL BOMBSHELL americasnetwork.com I know this story has been posted by this reportfrom americas network is more complete on the details. It looks like DSL will be a big deal with lots of coverage. Will this take the pressure off ATT to open up?

To: JGoren who wrote (5586)	10/19/1999 2:03:00 PM
From: wonk	Read Replies (1) \| Respond to of 12823

The Airspan product description can be found here: airspan.com Airspan's AS4000 range of wireless access systems provide robust, broadband CDMA for a telecommunication service provider's local access network. These systems enable 32kbit/s and 64 kbit/s telephony, 56 kbit/s modem connectivity, 2B+D ISDN, 128 kbit/s leased lines, and internet solutions for business and residential applications.... Airspan's Radio Base Stations are named "Central Terminals" (CTs). These provide the radio link to the Subscriber Terminals (ST) which are deployed at the end-users' locations. In addition the CTs provide connectivity to an operator's switch, to an Access Concentrator (AC) for "Demand Assigned" operation, or to datacomms equipment. Network interfaces supported include 2-Wire VF, 2Mbits G.703 with CAS in TS16, DASS2, DSS1, V5.1 or V5.2 signalling schemes. T1 (1.5Mbit/s) interfaces and signalling schemes are also supported.... Mobile operation is not supported. According to the website, the Airspan product conforms to the ETSI standard described in EN 301 055 V1.1.1 (1998-02) Tansmission and Multiplexing (TM); Digital Radio Relay Systems (DRRS); Direct Sequence Code Division Multiple Access (DS-CDMA); Point-to-multipoint DRRS in frequency bands in the range 1 GHz to 3 Ghz You can go here and get the spec by typing in EN 301 055 in the search window and specifying "Standard Type and Document." Registration is required. webapp.etsi.org In a nutshell, this is a pure wireless local loop architecture conforming to and interfacing directly with traditional PSTN protocols. The disadvantage is basic - no mobility. The advantages are also tied to the lack of mobility: 1. Standard PSTN interfaces; 2. Greater system capacity; 3. Much reduced capital equipment cost. ww