Creatix Polymedia GmbH CTX712V2 用户手册
V.34
28800…14400, 9600, 4800 u. 2400 bps, Fallback to 4800 bps;
full-duplex and half-duplex
full-duplex and half-duplex
V.Fast Class 28800…14400
V.42bis
V.42bis
Error Correction and Data Compression Procedure to CCITT
Table A-1
Technical Specifications
Parameter Specifications
Methods of operation
Asynchronous with manual and automatic dialing (AT-commands)
Error Correction and Data
MNP Classes 1–5, V.42 and V.42bis
Compression
Transmission rates and
Transmission rates and
See Chapter 1
Modulation procedure
Tolerance for deviation
Tolerance for deviation
Max.: +1 (+ 2,3), -2,5%
from nominal speed
Character length asynchronous 7, 8, 9, 10, 11 Bits (incl. Star and Stop bits)
Pulse adjustment in
Character length asynchronous 7, 8, 9, 10, 11 Bits (incl. Star and Stop bits)
Pulse adjustment in
Internal: Local oscillator
synchronous mode
Extern: Pulse loop (Receive pulse = send pulse)
Interface with telephone
Dialing line: 2-wire, full duplex
network
Digital interface
Digital interface
RS232
Automatic dialing
DTMF dialing
Loudspeaker
Software-controlled: 3 volume levels.
DTMF amplitude fluctuation
<1 Db
Tone duration
90 ms
Guard tone
550 Hz, 1800 Hz or no Guard tone
Temperature range
0–40° C
Storage temperature
-25–+70° C
Air humidity
max. 85% (Rel.)
Dimensions
120 *123 * 20 mm (L*B*H)
Weight
ca. 50 g
TECHNICAL INFORMATION Appendix-3