Category     12 - ENVOY.100
Service       3 - ENVOY.100.AND.DATAPAC


ENVOY 100 AND DATAPAC
=====================

ENVOY 100 USES DATAPAC, TELECOM CANADA'S NATIONWIDE, DIGITAL PACKET-
SWITCHING NETWORK, TO ASSURE ERROR-FREE COMMUNICATIONS BETWEEN THE
USER'S TERMINAL AND THE ENVOY 100 COMPUTER.  BECAUSE OF DATAPAC'S
PUBLIC DIAL PORT SERVICE, TELECOM CANADA CAN OFFER ENVOY 100 LOCALLY
IN MORE THAN 92 CITIES THROUGHOUT CANADA.  IT DOESN'T MATTER TO
WHICH CITY YOU TRAVEL, THE EASE OF ACCESS AND COST OF USAGE REMAIN
THE SAME.

USING DATAPAC
-------------

USING DATAPAC IS EASY.  SIMPLY DIAL DATAPAC 3101'S LOCAL TELEPHONE
NUMBER IN ANY OF THE CITIES WITH AN ACCESS PORT (SEE CATEGORY #3-
DATAPAC 3101 PUBLIC DIAL PORTS FOR A LISTING).  DATAPAC ANSWERS
THE CALL BY SENDING OUT ITS HIGH-PITCHED "CARRIER" SIGNAL,
WHICH LINKS THE NETWORK AND THE TERMINAL.  UPON HEARING THE SIGNAL,
YOU PUT THE MODEM IN DATA MODE AND TYPE A PERIOD (300 BPS) AND
CARRIER RETURN (CR) WHICH ALLOWS DATAPAC TO LINK ITSELF TO THE
TERMINAL.  FOR ACCESS AT 1200 BPS, KEY IN TWO PERIODS FOLLOWED BY A
CARRIAGE RETURN (CR).  (THE TECHNIQUE FOR READYING THE MODEM VARIES
FROM DEVICE TO DEVICE.  EACH SHOULD HAVE SPECIFIC INSTRUCTIONS.  IF
YOU ARE HAVING PROBLEMS, CONTACT YOUR SERVICE CENTRE FOR HELP.)

DATAPAC THEN RESPONDS BY TELLING YOU ITS NAME AND PORT ADDRESS.  YOU
TYPE IN ONE OF TWO ENVOY 100 ADDRESSES (39400900 OR 79400900) AND
DATAPAC CONNECTS YOU.  HERE'S HOW IT LOOKS (USER RESPONSES ARE UNDERLINED):

DATAPAC:  2040 0101

39400900
--------

DATAPAC:  CALL CONNECTED

USER NAME? J.DOE
           -----

PASSWORD::  ----------

WELCOME TO ENVOY 100!  YOUR LAST ACCESS WAS....

ALTHOUGH DATAPAC IS SIMPLE AND FLEXIBLE TO USE, THE INTELLIGENCE
INHERENT IN IT ALLOWS YOU TO ADJUST ITS OPERATION TO MATCH THE
CHARACTERISTICS OF YOUR TERMINAL.  FOR EXAMPLE, DATAPAC CAN BE
FORMATTED TO HANDLE TERMINALS WITH A WIDE VARIETY OF LINE LENGTHS.
IT CAN ALSO OPERATE IN EITHER HALF OR FULL DUPLEX MODE AT USER
CONTROL AND CAN PERFORM TASKS LIKE PARITY CHECKING, LINE TEXT
EDITING AND BIT PADDING TO ADJUST FOR PRINTER TERMINALS.

IN ALL, THERE ARE APPROXIMATELY TWENTY DIFFERENT FUNCTIONS WHICH YOU
CAN CONTROL IN DATAPAC 3101.  AND WHEN THIS CAPABILITY IS ADDED TO
NATIONWIDE AVAILABILITY, LOW COST AND VIRTUALLY ERROR-FREE
OPERATION IT MAKES DATAPAC THE IDEAL PATHWAY FOR ENVOY 100 TRAFFIC.
FOR MORE INFORAMTION ON DATAPAC, PLEASE CONTACT YOUR SALES
REPRESENTATIVE.