C-Series Modems: Affordable 56Kbps* Data/Fax/Voice/Video Communications

    • Line speeds: External Z34-SC—56K* to 300 bps; Internal Z34-PC—56K* to 300 bps
    • 56Kbps * featuring ITU-T V.90 and USR x2™ Technology
    • V.34 compatibility at 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
    • Fax compatibility Group 3, V.17 at 14.4Kbps and V.29 at 9600 bps, fax software Class 1
    • Voice features: Answering machine, advanced voicemail and full-duplex speakerphone
    • Built-in MIC and speaker on Z34-SC; external MIC and speaker jacks on Z34-PC
    • Videophone ready with V.80 for H. 324
    • V.42bis data compression for up to 115.2Kbps throughput, as well as V.42 and MNP 2-5
    • Hayes™ AT auto-dialing and CallerID support
    • Asynchronous 2-wire full-duplex dial-up
    • Flash memory for fast modem firmware upgrades; ITU-T 56Kbps upgradeable
    • Includes data/fax/voice software and Windows™ drivers

    Zypcom's C-Series modems integrate data, fax and voice features into one reliable, low-cost communications solution. The C-Series product line includes an external and internal modem for computers using Microsoft® Windows 3.1/95. Both models incorporate V.90 56Kbps* technology for line speeds up to 56Kbps*. With V.42bis compression, data throughput can reach up to 115,200bps. 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."

    Fax, Voice and Video
    In addition to advanced data mode capabilities, C-Series modems include the latest fax and voice features. Fax features such as 14.4Kbps line speeds, personal fax mail boxes, fax retrieval functions and fax-on-demand capabilities combine to offer the full fax functionality required at remote offices. The C-Series voice features include a digital answering machine, multiple personal voicemail boxes with security, message scripting capabilities and a full-duplex speakerphone. In addition, these modems incorporate V.80 compatibility for H.324 videophone calls. C-Series modems will record and play messages through the Z34-SC's built-in MIC and speaker or an attached telephone handset. These modems are also sound card-compatible for recording and playback (.WAV format) of messages.

    The Z34-SC and Z34-PC are designed with flash memory for controller and digital signal processor (DSP) upgradeability. Future improvements and enhancements such as ITU-approved 56Kbps operation can be quickly downloaded to the modem through the PC's COM port.

    With its ease-of-use, compatibility, data, fax and voice features, the C-Series modem offers the busy home/office worker the best price/performance ratio available. Network World said "Zypcom provides the biggest bang for the buck."


    56Kbps Data/Fax/Voice/Video Modems

    Operating SpeedsDTE rates (asynchronous): 115.2K, 57.6K, 38.4K, 19.2K, and 9600, 4800, 2400, 1200, and 300 bps; fixed speed or autobaud

    Line speeds: 56K, 54.6K, 53.3K, 52K, 50.6K, 49.3K, 48K, 46.6K, 45.3K, 44K, 42.6K, 41.3K, 37.3K, 33.6K, 33.3K, 31.2K, 28.8K, 26.4K, 24K, 21.6K, 19.2K, 16.8K, 14.4K, 12.0K, and 9600, 7200, 4800, 2400, 1200, and 300 bps

    * Current FCC restrictions limit downloads speeds to 53.3Kbps

    Autorate (fallback/forward): 56kbps to 2400bps

    Compatibility V.90, X2, V.34+, V.34, V.32bis, V.32, V.22bis, V.22, V.21, 212A, 103

    Operation 2-wire full-duplex dial-up

    Data Format Asynchronous: 10 bits

    DTE Interface Z34-SC: EIA-232D, ITU-T V.24; Z34-PC: 16550 compatible UART

    Transmit Levels -10 dBm permissive; Selectable -9 to -16 dBm is available

    Receiver Sensitivity -10 to -43 dBm

    LED Display Z34-SC only: TXD, RXD, RTS, CTS, DSR, DTR, CXR, EC, AA, SPD, TST, VOICE, FAX, and POWER

    Diagnostics ALB, ALB-ST, RDLB, RDLB-ST

    Dimensions Z34-SC: Height: 1.5"; Width: 4.5"; Length: 7.5"; Weight: 1.5 lbs.
    Z34-PC: ISA PC bus quarter-card

    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

    Compliance FCC Part 68, Part 15-Class B, UL/CUL/DOC/TUV/IEC, REN 0.8B

    Windows Compliance Windows 95™ compliant and Plug-and-Play™ (PnP) compatible

    Upgradeability Flash memory for downloading new features; ITU-T 56Kbps upgradeable


    Dialer Type & Data Hayes AT; Type: Tone or pulse; Data: Asynchronous

    Dialing Directory 4 numbers, 32 characters each

    Error Control and Data Compression

    Protocol/Operation V.42, V.42bis, MNP Classes 25; Automatic, forced-on or forced-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 compliant required by PC fax software

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


    Voice Modes Answering machine, voice mail and full-duplex speakerphone

    Voice Commands IS-101 AT+V commands

    Voice I/O Z34-SC record and play: Built-in MIC and high-quality speaker; Telephone handset; PC sound card (.WAV file format)

    Z34-PC record and play: External MIC phono jack; External speaker phono jack; External earphone phono jack (speakers not included); Sound card (.WAV file format)

    Voice Sampling Sampling size: 8-bit A-law, 8- or 16-bit Linear PCM and 3- or 4-bit ADPCM

    Sampling rates per second: 4800, 7200, 8000, 9600 and 11.025K

    Video V.80 compliance required by H.324 videophone software

    Ordering Information

    Each C-Series modem will include a telephone cable—P/N 15047-004, User's Guide, SuperVoice data/fax/voice software and a Windows setup disk. The Z34-SC external modem will include a 110VAC power supply. For 220VAC power supply, indicate after model number when ordering (example: Z34-SC, 220V).

    Models Description

    Z34-SC External 56Kbps data, 14.4Kbps fax and voice, built-in MIC & speaker

    Z34-PC Internal (ISA) 56Kbps data, 14.4Kbps fax and voice, MIC included


    94200-095 48VDC power supply for Z34-SC
    94200-100 24VDC power supply
    94200-101 12VDC power supply


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