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17
and XON/XOFF software flow control is disabled in the
communication software.
3. Make sure the data speed is not faster than your
computer's capability. Most IBM compatibles are ca-
pable of 19,200 bps under DOS and Windows. Operat-
ing at higher speeds under Windows requires a faster
CPU (386/486 or better), a high performance replace-
ment Windows 3.1x comm.drv, or Windows 95.
Modem experiences bursts of errors or suddenly
disconnects while communicating with a remote
modem.
1. Make sure Call Waiting is turned off.
2. Make sure the phone line does not exhibit excess noise.
Modem exhibits poor voice record or playback.
1. Make sure the correct modem type is selected in the
Voice/FAX software. Use “Generic Rockwell” or simi-
lar selection.
Section Seven - Support and Service
In the unlikely event you experience difficulty in the
use of this product, we suggest you: (1) consult the
Troubleshooting section of this guide and (2) consult with
your dealer. To obtain service for this product, follow the
Return Merchandise Authorization Procedure as out-
lined in the Warranty card.
Appendix A - Specifications
Communication Std. V.34+, V.32bis, V.32, V.29, V.27ter,
V.22bis, V.23, V.22, V.21, V.17,
Bell212/103
Data Compression: V.42bis/MNP5
Error Correction: V.42/MNP2-4
Host Interface: 8 bit PC bus
COM ports: 1, 2, 3, 4
IRQ lines: 3, 4, 5, 7
FAX Group: Group III Send/Receive Standard
FAX Command set: EIA/TIA-578 Service Class 1, EIA/
TIA-SP2388 Service Class 2
Transmit level: -11 dBm +/- 1 dB
Receiver Sensitivity: -39 dBm (V.34); -43 dBm (all other
protocols)
UART: 16550 compatible
Data format: 300-115200 bps