CC-56K2N-CS Copeland Communications Inc, CC-56K2N-CS Datasheet - Page 26

• Manufacturer Part Number: CC-56K2N-CS
• Description: MODEM 56KBAUD SERIAL 3.3V
• Manufacturer: Copeland Communications Inc

Specifications of CC-56K2N-CS

• Data Format: V.22, V23, V.32, V.34, V.90, Bell 103, Bell 212A
• Baud Rates: 56k
• Interface: UART
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 539-1014

© 2005 Copeland Communications, Inc.
Extended AT% Command Set
Command
%On
%O1
%O2
%Cn
%C0
%C1
%C2
%C3
%Vn
%V0
&V1
&V2
%B
%$
Display AT% command settings.
Report blacklist. See also S42 register.
Data compression
Disable V.42bis and MNP5 data compression
Enable V.42bis in transmit and receive paths. If MNP is selected (\N2), then %C1 enables
MNP5 in transmit and receive paths.
Enable V.42bis in transmit path only.
Enable V.42bis in receive path only.
Answer mode
Modem will auto-answer a call in answer mode.
Modem will auto-answer a call in originate mode.
Automatic Line Status Detection
After the %V1 and %V2 commands are issued, the modem will automatically check the telephone
connection for weather or not a line is present. If a line is present, the modem will automatically
check if the line is already in use.
Finally, the modem will check line status both before going off-hook and again before dialing. %V1
uses the fixed method, and %V2 uses the adaptive method. %V0 (default) disables this feature.
Disable automatic line-in-use detection.
Automatic Line Status Detection - Fixed Method.
Description: Before going off-hook with the ATD, ATO or ATA commands the modem compares
the line voltage via LVCS to registers NOLN (U83) and LIUS (U84):
Loop Voltage
0 <= LVCS <= NOLN
NOLN <= LVCS <= LIUS
LIUS <= LCVS
One the call has begun, the off-hook intrusion algorithm operates normally.
In addition, the modem will report "NO LINE" if the telephone line is completely disconnected.
If the HOI bit (U77, bit11) is set, "LINE IN USE" is reported upon intrusion.
Automatic Line Status Detection - Adaptive Method.
Description: Before going off-hook with the ATD, ATO or ATA commands, the modem compares
the line voltage (via LVCS to the NLIU (U85) register:
Loop Voltage
0 <- LVCS <= (0.0625 x NLIU)
(0.0625 x NLIU) < LVCS <= (0.85 x NLIU)
(0.85 x NLIU) < LCVS
Data Sheet
(Command Defaults in Bold)
Page 26 of 64
Report "NO LINE" and remain on-hook.
Report "LINE IN USE" and remain on-hook.
Go off-hook and establish a modem connection.
Action
Action
Report "LINE IN USE" and remain on-hook.
Report "NO LINE" and remain on-hook.
Go off-hook and establish a moden connection.
World Modem NET Datasheet Rev 1.0
World Modem™ NET
Action