New products in brief

Name

Description

Manufacturer~distributor

C/10ALC PAD

PAD for use in airline reservation systems. Supports Airline Link Control (ALC) protocol & allows airline to replace the long-haul portion of its leased lines with a BBN packet network. Offers support for up to 32 multidrop lines, call accounting and an end-to-end protocol similar to the Display System Protocol that allows the terminal-side ALC PAD to perform device polling, and the host-side PAD to respond to the FEP polling

BBN Communications Ltd., 21 Knightsbridge, London SWIX 7LY, UK. Tel: 01-245 6223

SDLC 5250 gateway

Connects IBM PCs and compatibles to IBM System/36, 38 and AS/400 computers. Allows PCs to emulate 5251, 5291 and 5292 terminals and provides support for local 5256 and 5219 printers. Can be used with most Netbios based LANs. Adapter is based on a 68008 processor operating at 7.159 MHz, and is available in both standard bus format for the IBM PC and Micro Channel format for the IBM PS/2 models 50, 60, 70 and 80

Torus Information Networks Ltd., 3 Grampian House, Meridian Gate, 205 Marsh Wall, London E14 9YT, UK. Tel: 01-538 5851

TFI O0 fax gateway

Enables fax messages to be transmitted direct from wordprocessor/ computer terminal in the network to which the gateway is attached. Also achieves higher quality reproduction on the receiving fax machine as the original text is digitally converted. Avoids printing out documents and then sending manually by fax

Transtel Communications Ltd., 15 Liverpoool Road, Slough, Berks SL1 4QZ, UK. Tel: (0753) 691869

VINES Mac Mail Gateway

Software enables Apple Mac/IBM and DOS compatible users to exchange e-mail and file attachments freely over Banyan's VINES network. Runs automatically and imperceptibly. Consists of a listener and bridge which communicate with AppleTalk networking protocol

Banyan Systems Inc., 115 Flanders Road, Westbro, MA 01581, USA. Tel: (508) 989 1000

ACP 6640 network interface

Interface promises to lower the cost of connecting a DEC VAX computer to users on a PBX network which uses the Digital Multiplex Interface (DMI) protocol. Up to 23 terminals workstations on the PBX can access a VAX across a single, high speed link. Connects VAX to PBX via single twisted pair line that transmits data at T1 rates. Resides in the VAX and includes a software device driver that supports VMS, Unix System V, Unix BSD 4.2 or Ultrix

Advanced Computer Communications, 720 Santa Barbara Street, Santa Barbara, CA 93101, USA. Tel: (805) 963 9431

ACS 9315 hardware interface

High speed hardware interface connecting IBM MVS and VM hosts to Ethernet LANs. Supports IBM-defined Continuously Executing Transfer Interface protocol to maximize throughput. Combined with appropriate software on the IBM host creates a fully integrated IBM-Ethernet environment. Attaches to IBM block multiplexer channel and the Ethernet, and performs all IBM-to-Ethernet interface functions, including data checking and error recovery

Advanced Computer Communications, 720 Santa Barbara Street, Santa Barbara, CA 93101, USA. Tel: (805) 963 9431

C99000 TurboSwitch

Microprocessor-controlled interface switching device, enabling single address systems in multi-host environments to independently communicate with any Burroughs computer without the need to switch lines. User can switch from his terminal direct to any connected Burroughs host, up to a maximum of 6. WAN applications supported with interconnected modems via communications interfaces

Pink Computing Ltd., Unit 1, Station Road Industrial Estate, Great Dunmow, Essex, CM6 1EJ, UK. Tel: (0371) 4521

Soft Switch SNADS

Provides exchange of e-mail between Banyan Mail and most other major e-mail systems. Utilizes Banyan-architected mail interface to communicate with Banyan Mail, & implement the SNA Distribution Services (SNADS) architecture to communicate with other Soft Switch products, or with DISOSS. Can be executed on IBM PC/AT, PS/2 or compatible

Banyan Systems (UK) Ltd., Suffolk House, George Street, Croydon, CRO OYN, UK. Tel: 01-686 8007

TLC32040 interface circuit

Analogue Interface Circuit (AIC) chip providing a complete flexible high performance analogue-to-digital I/O system. Integrates 10-15 MSI and LSI functions, including analogue-to-digital and digital-to-analogue converters, a multiplexer, timing and control logic and a four-mode serial interface. The filter characteristics, sampling rates, gain selection and phase adjustment are software-programmable

Texas Instruments Ltd., Manton Lane, Bedford MK41 7PA, UK. Tel: (0234) 63211

Gateways

Interfaces

180

computer communications

Name

Description

Manufacturer/distributor

TX400-VP X.400 electronic messaging system

X.400 electronic messaging system for DEC VAX minicomputers. Provides the framework for a worldwide corporate e-mail network irrespective of the type of computer used. Accommodates binary files, allowing graphics, programs and data files to be sent. Compatible with BT GOLD 400 public e-mail, providing PSTN dial-up access, and includes fax and telex

British Telecom International Product Division, 17-19 Rochester Row, London SWl P 1LA, UK

32/64-channel Transceiver

Fibre optic transceiver with 32 bi-directional channels, which is independent of transmission speed and data format. Has 32 25-pole D sub-connectors with RS-232C interfacing. Each sub-connector has a duplex data channel, two duplex channels for control signals and a synchronous clock with selectable speeds. Transmission speeds of between 1.2 and 76.8 kBaud per data channel in synchronous communication

Tekelec Ltd, Charles House, Toutley Road, Berks RG11 5QN, UK. Tel: (0734) ;771020

850T Fax

Digital facsimile in an addressable, asynch/synch fax transceiver meeting NATO Tempest requirements. Operates on a wide variety of data networks, it does not require computer support to establish communications and can operate as a synch network terminal at speeds up to 9.6 kbit/s. Can also communicate with other Tempest fax units (850T or R-3312/TA)

Secure Computer Systems Ltd., Knightsbridge Business Centre, Cheltenham, Gloucester GL51 9TA, UK. Tel: (0242) 680755

External modem with voice/data detection, allowing an existing telephone line to be used as an auto-answer data circuit. When speech is detected on an incoming call, the modem plays music, holds the call and pages the system operator. Features non-volatile memory, and operates in synchronous mode. Supports V.21, V.22 and V.22bis, plus Bell standards 300, 1200 and 2400 bit/s. Full call progress monitoring provided on-screen

Digital Matrix Ltd., 75 Willow Road, Solihull, West Midlands B91 1UF, UK. Tel: (021) 704 1399

Micro-miniature short-range modems connecting full duplex asynchronous terminals to computers. Both models operate over unconditioned 4-wire telephone lines at data rates of up to 1.92 kbit/s. Covers distances of up to 10.5 km (SRM-5A) and 27 km (SRM-SD), depending on wire gauge and data rate. Suitable for connection to local circuits provided by most national PTTs. Both modems use hybrid technology and operate without AC power supply

PAD, 8 Hanechoshet Street, Tel Aviv 69710, Israel. Tel: (972) 3 494511

.Modems Datatronics 2400C

SRM-5A/5D

Multiplexers and concentrators SDM-1 Speech Integrates voice/data over PSTN or leased lines by incorporating voice Data Mux compression. Promises quality at low bit rates (8.4, 9.6 and 12 kbit/s). Can be attached to analogue curcuits deploying modems or directly to ports on existing 64 kbit/s or 2 Mbit/s muxs 6742/6745 Flexible Networking Exchange

Combines statistical multiplexer technology with the capability to interface to X.25 networks. Provides up to 192 ports and gateway to X . 2 5 and other standards. Consists of 2 networking muxs with common design and functionality: the 6742 for up to 32 ports, and the 6745 for up to 192 ports. Networking functions and protocols are selected solely by the software. X.25 Processor is available as an option

European Data Group (UK) Ltd., P O Box 421, Network House, Whites Row, London E1 7PD, UK Motorola Codex, Chervil House, 28 Stafford Road, Wallington, Surrey SM6 9AL, UK. Tel: 01-669 4343

From left: ACP 6640 Vax to PBX communication interface from Advanced Computer Communications; Datatronic's 2400C external modem from Digital Matrix Ltd; and European Data Group's SDM-1 Speech Data multiplexer

vol 12 no 3 june 1989

181