Multi-Multi-Tech MultiModem ZPX Plug-in card Fax / modem

CNET editors' review

• CNET editors' rating: 2.5 stars OK
  Detailed editors' rating
  Overall score: 5.0 (2.5 stars)

• Reviewed on: 09/28/1998

At $150, the Multi-Tech MultiModemZPX is costly for an internal. While it offers some additional features over its external counterpart, performance is sadly lacking. With good clean lines, the MultiModem managed an acceptable 42.6 kbps for V.90 calls. But when challenged with noise and distortion, it fell apart. Even with some relatively benign impairments, the modem couldn't stay above 35 kbps.At $150, the Multi-Tech MultiModemZPX is costly for an internal. While it offers some additional features over its external counterpart, performance is sadly lacking. With good clean lines, the MultiModem managed an acceptable 42.6 kbps for V.90 calls. But when challenged with noise and distortion, it fell apart. Even with some relatively benign impairments, the modem couldn't stay above 35 kbps.

As the only product in our roundup to use Lucent Technologies' chipset, we were hoping for better from the MultiModemZPX. But despite the fact that V.90 is a standard protocol, there is still some variation in how it gets implemented, and performance can fluctuate, depending upon the type of central site equipment used in making the connection. Thus, the Multi-Tech may perform better with Livingston units than it did with CNET Labs' test equipment.

Analog V.34 connections told an entirely different story. Here, the ZPX behaved admirably by delivering 30.6 kbps over good line conditions while remaining relatively untroubled by bad ones. With compression enabled, the MultiModem transferred text-based files at a speedy 93 kbps.

While the MultiModemZPX isn't the speediest of modems, it sports a couple of nice features. If you have a sound card, speakers, and a microphone, you can use your modem as a hands-free full-duplex speakerphone and Internet phone. You can also set the ZPX for voice messaging and fax on demand using the Trio Communication software, which is provided on a CD-ROM. Multi-Tech also provides an extensive number of other Internet utilities, games, and free online service trials. Continue reading

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