CH1794A Cermetek Microelectronics, CH1794A Datasheet - Page 13

• Manufacturer Part Number: CH1794A
• Manufacturer: Cermetek Microelectronics

Specifications of CH1794A

• Lead Free Status / RoHS Status: Not Compliant

Cermetek Microelectronics, Inc.
When you are notified, you will be given the
opportunity to connect the problem and informed of
your right to file a complaint with the FCC. Contact
your local telephone service provider if you have any
questions about your phone line.
In the event repairs are ever needed on the (insert
your product name), they should be performed by
(insert your company name), or an authorized
representative or (insert your company name).
information contact: (insert your company address).
DEFAULT
SPECS
Prior to delivery, Cermetek installs into each HS
Modem the following default Configuration Profile:
Default Connect Speeds (DCE) are 14,400bps,
33,600bps and 57,600bps for CH1794A, CH1799A
and CH2056A respectively
Serial port data rate auto baud enabled
Bell 212A operation at 1200bps
Parity – none
Auto answer disabled
Command echo ON
All result codes enabled – except \REL codes
Wait for dial tone before dialing – 2 seconds
Dials with touch-tone (T)
Detects busy signal (ATX4)
Full word result codes – non-extended
Pulse dial make/break ratio = 39/61-10pps
Test timer set to 0 seconds, test modes disabled
Inactivity timer set to 0 minutes
CTS always active
DSR always active
DCD is ignored
RTS to CTS delay - .01 seconds
DTR always active – hang up after transition
Long space disconnect disabled
Speaker enabled but off when receiving carrier
Speaker volume set to low
2007 Cermetek Microelectronics, Inc.
STATUS,
PERFORMANCE
AND
For
Page 13
Local modem will not grant RDL request from remote
modem
Guard tones disabled
Minimum DTR pulse width = .05 seconds
Ring count – 00
Escape code character = 43 (+)
Flash to on hook = 70 msec
Auto speed detection enabled
DTE connect speed, connect messages
Back space character = 08 (BS) Carriage return
character = 13 (CR)
Line feed Character = 10 (LF)
Duration of wait for dial tone =2 seconds
Duration of wait for carrier after dialing = 50 seconds
Carrier detect response time = 0.6 seconds
Escape code guard time = 1 second
Length of use after comma = 2.0 seconds
Last carrier to hang up delay = 1.4 seconds
DTMF interdigit delay = .095 seconds
Auto sync address or address detection =0
Connection detected at DTE – Highest speed
38,400kbps
Auto retrain enabled – 30 seconds attempts
MNP error correction mode can be negotiated (&Q5)
MNP – non-extended service selected
MNP error correction block size is 128 characters
selected
Data compression – negotiation enabled
Transmit break length is 0.3 seconds
All breaks are transmitted in sequence with data
Serial port flow control enabled = RTS/CTS
XON/XOFF flow control characters selected
Upon power-up the HS Modem will recall user profile
0 which may override some of the above Factory
Defaults.
save the factory defaults in user profile 0.
CH179XA/2056A High Speed Family of Ultra Small Modems
If desired the user may, at their option,
IMPORTANT NOTE
Document No. 607-0020 Revision B (01/07)