Select Your Modem |
Proper modem selection is probably the most important part of the program setup. Here is information on several types of modems.
Select Rockwell modem if you are not sure which driver to choose for your external or internal ISA modem. Most voice modems today are Rockwell-compatible.Windows modems (PCI) usually will comply with 'IS-101', 'Lucent WinModem (AT&&T)' or 'Rockwell HCF 56K PCI Modem' devices.
If your modem is U.S.Robotics/3COM Sportster Voice, try 'U.S.Robotics Voice 33.6/56K' / 'U.S.Robotics Voice 56K X2'. Sometimes it is useful to try 'U.S.Robotics Voice (using IMA ADPCM)' modem for troubleshooting.
There are many manufacturers of Voice modems, but all use a relatively small number of chipsets. The most common are:
Chip set | Sample modems |
---|---|
Cirus Logic | Cirrus Logic CL-XXXXXX |
IS-101 compatible | Makes use of AT+V voice command set. Most of the chips are manufactured by AT&T (Lucent). A lot of 'software' and PCI modems use IS-101 command set. Newer Cirrus Logic modems, Dr.Neuhaus Smarty, Lucent LT WinModem, MultiTech. |
Rockwell 56K HCF | A lot of manufacturers use this modern chip set for PCI modems. Creative Modem Blaster 56K (PCI) is an example of a HCF modem. Others include Aztech 56K PCI Voice-Modem, Creative Modem Blaster Flash56 PCI. |
Rockwell | Definitely the most popular voice chipset for today, used also in most ACORP modems. A lot of modems are compatible with Rockwell, including: Acorp, Boca Research, Apache CL-MD34XX, Hayes Accura, Logicode 33H-P-CL DF, several Pace modems, PowerBit, GVC (you should select GVC for these), Diamond Supra. You may try both Rockwell compatible (ADPCM) modem and newer Rockwell compatible (PCM 8) with a higher quality of the voice recorded. |
Texas Instruments | Used, for example, in U.S. Robotics, sometimes in ACORP modems. |
U.S.Robotics / 3COM | These modems use TI chip sets at most. |
ZyXEL | A proprietary chipset used exlusively in ZyXEL modems. |
ACORP 56k Voice TI is an example of a Texas Instruments-based modem
Some ZyXEL modems are actually built with Rockwell chipset. In those cases select 'Rockwell' as your modem type.
A lot of ACORP modems, i.e. ACORP-56IMS, are built with one of the Rockwell chips.
Chips examples: RCVDL56ACF, RCV336ACF