Microcom Modems

Microcom Modems
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Microcom Systems was a major modem vendor during the 1980s. They hold an important place in modem history due to their introduction of the MNP error-correction and compression protocols, which were widely used under license by most modem manufacturers in the 1990s. Microcom introduced their own modems starting with the AX/1200 and AX/2400 modems, which featured MNP 4 error correction in an otherwise standard 1200 bit/s Bell 212/v.22 or 2400 bit/s v.22bis modem. When a Microcom modem was used by both ends of a connection, the connection was entirely error-free.

Microcom continued developing the MNP standards, and later introduced the MNP 5 standard, which compressed the data in the modem before sending it, thereby actually increasing the data rate while still being error-free. MNP 5 was introduced on the AX/1200c and AX/2400c, the "c" for "compression". MNP 1 through 5 were later handed to the ISO for standardization, and became widely available.

Microcom introduced a series of ever-faster modems, typically based on newely introduced standards. The first of these was the 9600 bit/s v.32-based AX/9600, but the introduction of v.42bis compression system that easily outperformed MNP 5 led them to introduce the QX/4232, followed by the 14,400 bit/s QX/4232bis when the v.32bis standard was ratafied. Microcom and Rockwell became partners on a number of ventures, including the creation of the MNP 10 and MNP 10EC protocols, and Microcom increasingly used Rockwell chipsets across their line.

The company also broadened its line into different price points, offering the DeskPorte series as their primary desktop modem, the OfficePorte which was similar but added fax capabilities, and the TravelPorte or TravelCard series of PC Card-based products for portable users. Compaq purchased the company in 1997.

Excerpted from Wikipedia

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182306602 MICROCOM ISPORTE CHASSIS
182503001 MICROCOM IS ADAPTER
201106601 MICROCOM IS56 OCTAL MODEM CARD
201106602 MICROCOM IS56 OCTAL MODEM CARD
AX2400C-R MICROCOM ENCLOSURE
AXPS MICROCOM AX POWER SUPPLY
CC MICROCOM CARBON COPY PLUS SOFTWARE
CC3.0-WIN MICROCOM carbon copy plus for windows
DM-15 MICROSOL BELL 220T R/M MODEM
DP-14.4-ES MICROCOM DESKPORTE 14.4 SERIAL MODEM
DP28.8SI MICROCOM 28.8,V.34 INTERNAL
DPES-V34UPG MICROCOM DESKPORTE FAST ES V.34 UPGRADE
DPFASTRM MICROCOM RACKMOUNT DESKPORTE FAST W/MIMI
DP-V34UPG MICROCOM DESKPORTE SERIES MODEM UPGRADE
DP-VFC MICROCOM V FAST CLASS CHIPS FOR DESKPORT
HD4232BIS MICROCOM HD DUAL V.32BIS MODEM CARD
HDCHASSIS MICROCOM HIGH DENSITY MGMT SYSTEM CHASSIS
HDFAST MICROCOM HD FAST MODEM V.34
HDFAST-ADAPTER MICROCOM HD FAST BACKPLANE ADAPTER
HDINC MICROCOM INT CONTROLLER
HDINC MICROCOM HDINC V.34 UPGRADE
HDV34-CHIPS MICROCOM HD 28.8 V34 MODEM CHIPS
HD-VFC MICROCOM HDFAST V FAST Class Chips Sets
INC+U MICROCOM INC used (from INC excange)
INC MICROCOM Intelligent Controller with SNMP
IS-CHASSIS MICROCOM IS PORTE 16 SLOT CHASSIS 34853
LE2.0-CLIENT MICROCOM LANEXPREE CLIENT UPGRADE
LE2.0-UPG MICROCOM LanExpress 2.0 Upgrade
LE3.0-UPG MICROCOM LANEXPRESS 3.1 UPGRADE
LE4.0-UPG MICROCOM LAN EXPRESS 4.0 UPGRADE
LEM001 MICROCOM SINGLE CLIENT KIT
LEMV.34UPG MICROCOM LAN EXPRESS MODEM V.FC TO V.34
QX4232BIS MICROCOM QX4232BIS MODEM
QX4232-R MICROCOM QX4232 MODEM
QX-CHASSIS MICROCOM 16-slot QX modem chassis
QXY.32C MICROCOM QXY.32C
RAK-100 MICROSOL17-SLOT CHASSIS DUAL POWER 110VA
RG5.0 MICROCOM RELAY GOLD
TC288P MICROCOM TRAVELCARD 28.8, PCMCIA
TRAVELPORTE FAST MICROCOM V.FAST TRAVEL MODEM
VFC-CHIPS MICROCOM ROCKWELL 288DPI/V FAST CLASS

Call 301-924-7400 ext. 17 for Information and Pricing on Microcom Modems
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