SI-Series: Zypcom's Industrial Modem

    • Line speeds: 56K to 300 bps
    • V.90 compatibility at 56K/28Kbps, V.34+, V.34 33.6K/28.8Kbps, V.32bis at 14.4Kbps, V.32 at 9600bps, V.22bis at 2400bps, V.22/212A at 1200bps, and V.21/103 at 300bps
    • Remote modem management
    • V.42bis data compression for up to 115.2 Kbps throughput, V.42 and MNP 3-4 error control
    • Hayes™ AT, and dial-on-DTR dialing
    • Password and callback security and memory security
    • Asynchronous 2-wire full-duplex dial-up
    • Software upgradeable via flash memory
    • Prestored configurations for popular applications
    • DC Powered runs on 12VDC, 24VDC, or 48VDC source
    • Panel Mountable or clips onto standard 35mm DIN Rail
    • CallerID support
    • Fax compatibility Group 3, V.17 at 14.4Kbps, V.29 at 9600 bps, and V.27ter at 4800 bps, fax software Class 1

Zypcom's SI-Series of modems are designed for industrial data communication applications that go beyond PC connectivity. Zypcom modems are proven leaders in data throughput—even on impaired telephone lines. Network World said "the best overall performer" of high-speed modems. Data Communications bestowed their "Top Performer" award. Byte said "sends and receives data faster than any modem." Zypcom's Z90-SI modem incorporates V.90 technology for line speeds up to 56Kbps.  The Z32b-SI modem incorporates V.32bis technology for 14.4Kbps line speeds.

AC or DC Powered

The SI-Series can be powered from a standard 110VAC outlet using the adapter included with the modem.  The modem also incorporates a three-screw terminal block that can be directly wired to an external DC power source.  This allows the modem to use 12VDC, 24VDC, or 48VDC power in applications where AC power is unavailable. Now 12VDC data collection, alarm system, and SCADA systems can use the same modem as 24VDC control networks, or 48VDC telecom applications.  The voltage selection is automatic and overall consumption is less than two watts.

Versatile and Rugged

The modem’s small footprint (2.0” x 4.6”) and industrial design allow the unit to be easily mounted in a control cabinet or attached to a standard 35mm DIN rail.  Screw mounting holes and DIN rail clip are an integral part of the design.  The four-position front panel DIP-switch allows the user to select an entire configuration profile, matching most typical PLC or SCADA applications, by setting a single switch.  Built-in management allows the modem to be completely optioned and configured from a remote location, greatly simplifying field installation and maintenance.  For over ten years, Zypcom modems have been the choice of leading automation vendors wanting to provide the best remote access solution available for mission critical applications.


With its ease-of-use, compatibility, security options, manageability, versatility and the highest full-duplex data throughput of any modem today, the SI-Series offers the data communications professional the best price/performance ratio available. Network World said "Zypcom provides the biggest bang for the buck."


SI-Series Modem Family

Compatibility Z90-SI: ITU V.90 at all rates, from 56000 bps to 28000 bps

ITU V.34 at 33.6K, 31.2K, 22.8K, 26.4K, 24K, 21.6K, 19.2K, 16.8K, 14.4K, 12K, 9600, 7200, 4800 bps

ITU V.32bis at 14.4K, 12K, 9600, 7200, and 4800 bps

ITU V.22bis at 2400 bps

ITU V.22 / Bell 212A at 1200 bps

ITU V.21 / Bell 103 at 300 bps

Z32b-SI: V.32bis, V.32, V.22bis, V.23, V.22, V.21, 212A, 103

Automode: V.90, V.34+, V.34, V.32bis, V.32, V.22bis, V.22, V.23, V.21, 212A, 103

Operating Speeds DTE rates (asynchronous): 115.2K, 57.6K, 38.4K, 19.2K, 9600, 4800, 2400, 1200 and 300 bps; Selectable fixed rate or autobaud

Autorate (fallback/forward): Z90-SI—V.90 modes: 56K to 28K bps, V.34 modes: 33.6K, to 4800 bps, (Z32b-SI—14.4K to 4800 bps)

Operation 2-wire full-duplex dial-up

Data Format Asynchronous: 8, 9, 10, or 11 bits

DTE Interface EIA-232D, ITU-T V.24  DB-9 connector

Transmit Level Dial-up: -10 dBm

Receiver Sensitivity  -10 to -43 dBm

Clock Timing Internal

LED Display TX, RX, RS, CS, TR, CD, EC, AA, SP

Switches 4-position DIP switch, power on/off

Remote Control Local control of remote Zypcom modems

Security Commands for 10-user password, callback and memory security

Diagnostics Self-Test (ST), ALB, V.54 Loop 3 test

Dimensions Height: 4.6"; Width: 2.0"; Depth: 3.7"; Weight: 9 oz.

Power Requirements 110VAC—95 to 127VAC, 60Hz; 220VAC—190 to 250VAC, 50Hz

Temperature Operating: 0° to 50° C (32° to 122° F) ambient; Storage: -20° to 70° C (-4° to 158° F); Humidity: 5% to 95% non-condensing; Extended operating range -40° to 70° C (-40° to 158° F) certification is available, contact Zypcom for details

Compliance FCC Part 68, Part 15—Class B, UL950, CE Mark, CTR21, Industry Canada


Protocols Hayes AT, and dial_on_DTR

Dialer Type & Data Type: Tone or pulse

Dialing Directory 10 numbers, 68 characters each

Error Control and Data Compression

Protocol V.42bis, V.42 and MNP Classes 3-4

Operation Automatic, forced on or off

Flow Control Software: Uni/Bi-directional Xon/Xoff; Hardware: RTS/CTS


Compatibility ITU-T Group III fax machines and fax modems

ITU-T V.17, V.29, V.27ter, V.21 Channel 2, T.30, T.4

EIA-578 Class 1 compatibility for fax software

FAX Operating Speeds Send/Receive: 14,400 bps to 2400 bps

Ordering Information

Each SI-Series modem includes a telephone cable—P/N 15047-004, User's Guide and 110VAC power supply. For 220VAC power supply, indicate after model number when ordering (example: Z90-SI, 220V).

Models Description

Z90-SI External 56K industrial modem

Z32b-SI External 14.4K industrial modem

Z90e-SI External 56K modem with 4-port 10/100 Mbit Ethernet Switch and Router


94200-101 230VAC power supply

92061-113 Extended temperature certification



29400 Kohoutek Way, Suite 170
Union City, CA 94587-1212
Tel: 510-324-2501 Fax: 510-324-2414