|
SNM50
DIGICOM SPA
SNM50
|
Card Type
|
Modem
|
|
Chip Set
|
Unidentified
|
|
I/O Options
|
Power, leased line, switched line, 25-pin serial port
|
|
Maximum Modem Rate
|
33.6Kbps
|
|
Maximum Fax Rate
|
14.4Kbps
|
|
Data Modulation Protocol
|
ITU-T V.21, V.22, V.22bis,V.23, V.32, V.32bis, V.34, V.34+
|
|
Fax Modulation Protocol
|
V.17, V.29, V.27
|
|
Error Correction/Compression
|
MNP5, V.42, V.42bis
|
|
Fax Class
|
Class I
|
|
Data Bus
|
External
|

|
CONNECTIONS
|
|
Function
|
Label
|
Function
|
Label
|
|
Power
|
CN1
|
Switched line (RJ-11 connector)
|
CN4
|
|
25-pin serial port
|
CN2
|
Power switch
|
SW1
|
|
Leased line (RJ-11 connector)
|
CN3
|
|
|
|
DIAGNOSTIC LED(S)
|
|
LED
|
Color
|
Status
|
Condition
|
|
PWR
|
Green
|
On
|
Power is on
|
|
PWR
|
Green
|
Off
|
Power is off
|
|
DSR
|
Red
|
On
|
Modem is ready
|
|
DSR
|
Red
|
Off
|
Modem is not ready
|
|
DTR
|
Red
|
On
|
Computer is ready
|
|
DTR
|
Red
|
Off
|
Computer is not ready
|
|
TD
|
Red
|
On
|
Modem is transmitting data
|
|
TD
|
Red
|
Off
|
Modem is not transmitting data
|
|
CTS
|
Red
|
On
|
CTS signal is high. TA ready to send data
|
|
CTS
|
Red
|
Off
|
CTS signal is low
|
|
RD
|
Red
|
On
|
Modem is receiving data
|
|
RD
|
Red
|
Off
|
Modem is not receiving data
|
|
DCD
|
Red
|
On
|
Data carrier present
|
|
DCD
|
Red
|
Off
|
Data carrier not present. Connection not established
|
|
TST
|
Red
|
On
|
Unit is conducting a test
|
|
TST
|
Red
|
Off
|
Unit not conducting a test
|
|
LNE
|
Red
|
On
|
Modem is off-hook
|
|
LNE
|
Red
|
Blinking
|
Modem in back-up
|
|
LNE
|
Red
|
Off
|
Modem is on-hook
|
|
SUPPORTED COMMAND SET
|
|
Basic AT Commands
|
|
AT, A/
|
|
A, C, E, H, M, Q, V, X, Y, Z
|
|
&F, &M, &T, &X
|
|
S Registers
|
|
Unidentified
|
|
Note: See MHI Help File for full command documentation.
|
PROPRIETARY AT COMMAND SET
|
COMMAND PORT
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Yn [cmds]
|
|
Description:
|
Enables/disables command port
|
|
Command
|
Function
|
|
&Y0
|
Command port disabled
|
|
&Y1
|
Command port enabled
|
|
COMMUNICATION PROTOCOLS
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] Bn [cmds]
|
|
Description:
|
Selects the communication protocol for data calls
|
|
Command
|
Protocol
|
|
B0
|
CCITT modulation with fixed carrier
|
|
CONNECT MODE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &En [cmds]
|
|
Description:
|
Controls the type of connection the modem will operate in
|
|
Command
|
Function
|
|
í &E0
|
Normal mode enabled
|
|
&E1
|
MNP/V.42 buffered auto-reliable mode enabled
|
|
&E2
|
V.42 sequence in auto-reliable mode; normal data mode if V.42 is not detected
|
|
&E3
|
V. 42 reliable mode enabled. Disconnect if fails
|
|
&E4
|
MNP auto-reliable mode; normal data mode if MNP is not detected
|
|
&E5
|
MNP reliable mode enabled. Disconnect if fails
|
|
&E6
|
MNP/V. 42 auto-reliable mode; normal data mode if error correction is not detected
|
|
&E7
|
MNP/V. 42 reliable mode enabled. Disconnect if fails
|
|
DATA SET READY (DSR) & DATA CARRIER DETECT (DCD)
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Cn [cmds]
|
|
Description:
|
Selects whether the DSR & DCD option is enabled or disabled
|
|
Command
|
Function
|
|
í &C0
|
DSR & DCD forced high
|
|
&C1
|
DSR & DCD are related to modulation standard
|
|
&C2
|
DSR forced high
|
|
&C3
|
DCD forced high
|
|
&C4
|
DSR & DCD forced high. When modem disconnects, DCD goes off for 2 seconds
|
|
&C5
|
DSR & DCD forced high. If DTR goes off or modem disconnects, DSR & DCD go off for 500ms
|
|
DATA TERMINAL READY (DTR)
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Dn [cmds]
|
|
Description:
|
Selects modem response to DTR
|
|
Command
|
Function
|
|
í &D0
|
DTR override
|
|
&D1
|
DTR toggle causes online command mode
|
|
&D2
|
Normal DTR operations
|
|
&D3
|
Resets on receipt of DTR
|
|
DIAL
|
|
Type:
|
Immediate
|
|
Format:
|
AT [cmds] D<#> [cmds]
|
|
Description:
|
Dials telephone number according to any modifiers included in the string
|
|
Note:
|
Any combination of modifiers can be used to produce the desired dial functions in sequence.
|
|
Command
|
Function
|
|
DR
|
Reverse mode enabled
|
|
DP
|
Pulse dialing enabled
|
|
DN
|
Dial stored telephone number
|
|
DT
|
Tone dialing enabled
|
|
DW
|
Dialing resumed following dial tone detection
|
|
D,
|
Dialing paused
|
|
D!
|
Flash function initiated. Modem commanded to go on-hook for .5sec
|
|
D@
|
Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by 5 seconds of silence
|
|
D;
|
Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.
|
|
D/
|
Wait for .125sec
|
|
DISPLAY DIRECTORY NUMBER
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Nn [cmds]
|
|
Description:
|
Displays/deletes telephone directory
|
|
Command
|
Function
|
|
&N0
|
Displays directory
|
|
&N99
|
deletes entire telephone dorectory
|
|
DISPLAY STORED TELEPHONE NUMBER
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] Nn? [cmds]
|
|
Description:
|
Displays stored number n
|
|
DTE FLOW CONTROL
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Un [cmds]
|
|
Description:
|
Enables DTE flow control options
|
|
Command
|
Function
|
|
í &U0
|
Flow control disabled
|
|
&U1
|
XON/XOFF flow control enabled
|
|
&U2
|
XON/XOFF passed through remote terminal
|
|
&U4
|
RTS/CTS flow control enabled
|
|
&U5
|
Software & hardware flow control enabled
|
|
&U6
|
Software & hardware flow control enabled. XON/XOFF passed through remote terminal
|
|
DUMB MODE CONTROL
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Vn [cmds]
|
|
Description:
|
Controls access to command mode
|
|
Command
|
Function
|
|
í &V0
|
Normal command mode access enabled
|
|
&V1
|
Command mode access via escape sequence enabled
|
|
&V2
|
Dumb mode; all commands are ignored. Use front panel to change status
|
|
FALLBACK/FALL-FORWARD
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &An [cmds]
|
|
Description:
|
Controls multi-standard detection feature which allows the modem to fall-forward and fallback if the modem signaling rate does not match the DTE
|
|
Command
|
Function
|
|
&A0
|
multi-standard detection disabled
|
|
&A1
|
multi-standard detection enabled
|
|
FRONT PANEL
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Sn [cmds]
|
|
Description:
|
Enables/disables front panel buttons
|
|
Command
|
Function
|
|
&S0
|
Front panel disabled
|
|
í &S1
|
Front panel enabled
|
|
GUARD TONE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Gn [cmds]
|
|
Description:
|
Commands the modem to transmit a guard tone in V.22/V.22bis
|
|
Command
|
Function
|
|
&G0
|
Guard tone disabled
|
|
í &G2
|
1800Hz guard tone enabled
|
|
INTERFACE BUFFER
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &In [cmds]
|
|
Description:
|
Allows the DTE to be set to a uniform rate regardless of the rate determined by the communications format selected
|
|
Command
|
Function
|
|
&I0
|
Constant speed interface to disabled DTE
|
|
í &I1
|
Constant speed interface enabled; CONNECT message indicates connect rate. Parity is transferred in transparent mode.
|
|
&I2
|
Constant speed interface enabled; CONNECT message indicates DTE rate. Parity is transferred in transparent mode.
|
|
&I3
|
Constant speed interface enabled; CONNECT message indicates connect rate. Parity is reconstructed by the modem.
|
|
LEASED LINE AUTO-HANDSHAKE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Hn [cmds]
|
|
Description:
|
Enables/disables leased line auto-handshake
|
|
Command
|
Function
|
|
&H0
|
Leased line auto-handshake disabled
|
|
í &H1
|
Leased line auto-handshake enabled
|
|
LEASED LINE/SWITCHED LINE NETWORK SELECTION
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Ln [cmds]
|
|
Description:
|
Selects a leased line or switched line network connection
|
|
Command
|
Function
|
|
í &L0
|
Switched line
|
|
&L1
|
2 wire leased line
|
|
&L2
|
4 wire leased line
|
|
LINE MODULATION
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] Fn [cmds]
|
|
Description:
|
Determines modem modulation standard
|
|
Command
|
Function
|
|
F0
|
Multi-standard mode
|
|
F1
|
300bps
|
|
F3
|
1200/75bps
|
|
F4
|
1200bps
|
|
F5
|
2400bps
|
|
F6
|
4800bps
|
|
F7
|
7200bps
|
|
F8
|
9600bps
|
|
F9
|
12.0Kbps
|
|
F10
|
14.4Kbps
|
|
F11
|
16.8Kbps
|
|
F12
|
19.2Kbps
|
|
F13
|
21.6Kbps
|
|
F14
|
24.0Kbps
|
|
F15
|
26.4Kbps
|
|
F16
|
28.8Kbps
|
|
F17
|
31.2Kbps
|
|
F18
|
33.6Kbps
|
|
MODEM FLOW CONTROL
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Kn [cmds]
|
|
Description:
|
Enables flow control options
|
|
Command
|
Function
|
|
&K0
|
Flow control disabled
|
|
&K1
|
XON/XOFF flow control enabled
|
|
&K2
|
RTS/CTS flow control enabled
|
|
&K3
|
Software & hardware flow control enabled
|
|
ON-LINE
|
|
Type:
|
Immediate
|
|
Format:
|
AT [cmds] On [cmds]
|
|
Description:
|
Controls on-line command (data transmission) state options.
|
|
Command
|
Function
|
|
O0
|
On-line command mode with no retraining enabled
|
|
PULSE DIALING RATIO
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Pn [cmds]
|
|
Description:
|
Selects pulse dial make/break ratio
|
|
Command
|
Function
|
|
í &P0
|
40/60ms at 10pps (North America)
|
|
&P1
|
33/67ms at 10pps (Europe)
|
|
REPORT INFORMATION
|
|
Type:
|
Immediate
|
|
Format:
|
AT [cmds] In [cmds]
|
|
Description:
|
Displays information requested
|
|
Command
|
Function
|
|
I0
|
Reports modem type
|
|
I1
|
Reports software revision level
|
|
I2
|
Reports ROM checksum
|
|
I3
|
Reports identification in S38
|
|
I4
|
Reports product code
|
|
I8
|
Reports revision level
|
|
RTS/CTS
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Rn [cmds]
|
|
Description:
|
Selects RTS/CTS options
|
|
Command
|
Function
|
|
í &R0
|
CTS follows RTS. Register S26 delays CTS by value selected (0 - 2.55sec)
|
|
&R1
|
CTS forced high, RTS is ignored.
|
|
&R2
|
CTS force high
|
|
&R3
|
CTS always follows RTS
|
|
SPEAKER VOLUME
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] Ln [cmds]
|
|
Description:
|
Controls speaker volume
|
|
Command
|
Function
|
|
L0
|
Low volume setting
|
|
L1
|
Low volume setting
|
|
í L2
|
Medium volume setting
|
|
L3
|
Highest volume setting
|
|
STORE ACTIVE PROFILE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] &Wn [cmds]
|
|
Description:
|
Writes the values for the active profile into the non-volatile RAM at location n.
|
|
Command
|
Function
|
|
&W0
|
Write the active profile to stored profile 0
|
|
&W1
|
Write the active profile to stored profile 1
|
|
&W2
|
Write the active profile to stored profile 2
|
|
&W3
|
Write the active profile to stored profile 3
|
|
&W4
|
Write the active profile to stored profile 4
|
|
&W5
|
Write the active profile to stored profile 5
|
|
&W6
|
Write the active profile to stored profile 6
|
|
&W7
|
Write the active profile to stored profile 7
|
|
&W8
|
Write the active profile to stored profile 8
|
|
&W9
|
Write the active profile to stored profile 9
|
|
&W99
|
Writes the 10 factory configurations in the 10 user profiles
|
|
STORE TELEPHONE NUMBER
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] Nn&Z [cmds]
|
|
Description:
|
Writes selected telephone numbers into the non-volatile memory at location n
|
SPECIAL COMMANDS
|
ASYNCHRONOUS DTR/1 MODE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] *Dn [cmds]
|
|
Description:
|
Enables DTR/1 direct call in asynchronous mode
|
|
Command
|
Function
|
|
í *D0
|
DTR/1 disabled
|
|
*D1
|
DTR/1 enabled with CTS on in off-line
|
|
*D2
|
DTR/1 enabled with CTS off in off-line
|
|
AUTO-RELIABLE BUFFER/CHARACTER CONFIGURATION
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] #An [cmds]
|
|
Description:
|
Controls the handling of incoming data during auto-reliable time period
|
|
Command
|
Function
|
|
í #A0
|
Auto-reliable buffer and character disabled
|
|
#A1
|
Auto-reliable character enabled
|
|
#A2
|
Auto-reliable buffer enabled
|
|
#A3
|
Auto-reliable buffer and character enabled
|
|
BIT ERROR RATE THRESHOLD
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] #Qn [cmds]
|
|
Description:
|
Determines Bit Error Rate Threshold to initiate fall-forward/fallback retrain
|
|
Command
|
Function
|
|
#Q0
|
Standard bit error rate threshold: SQ=3 equivalent at bit error rate of 1*10-5
|
|
í #Q1
|
Alternative bit error rate threshold: SQ=2 equivalent at bit error rate of 1*10-3
|
|
BREAK OPTIONS
|
|
Type:
|
Configuration
|
|
Format
|
AT [cmds] *Yn [cmds]
|
|
Description:
|
Sets the method for break transmission
|
|
Command
|
Function
|
|
í *Y0
|
Expedited signaling, immediately send break
|
|
*Y1
|
Destructive signaling, buffers cleared, immediately send break
|
|
*Y2
|
In-sequence signaling, break sent in sequence with transmitted data
|
|
*Y3
|
Break signal ignored
|
|
C140-C141 CONTROL
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] *Tn [cmds]
|
|
Description:
|
Enables/disables C140 & C141 signal interface
|
|
Command
|
Function
|
|
í *T0
|
C140 & C141 signal interface disabled
|
|
*T1
|
C140 signal interface enabled
|
|
*T2
|
C141 signal interface enabled
|
|
*T3
|
C140 & C141 signal interface enabled
|
|
*T4
|
C140 & C141 signal interface enabled. C141 requests loop 3 with modem on-line
|
|
CALLING TONE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] *Gn [cmds]
|
|
Description:
|
Controls whether the DTE will allow the modem to send a 1300Hz calling tone when originating
|
|
Command
|
Function
|
|
í *G0
|
Disable calling tone
|
|
*G1
|
Enable calling tone
|
|
DATA COMPRESSION
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] *En [cmds]
|
|
Description:
|
Enables/disables data compression
|
|
Command
|
Function
|
|
*E0
|
Data compression disabled
|
|
í *E1
|
Data compression enabled
|
|
DATA SET READY (DSR)
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] *Pn [cmds]
|
|
Description:
|
Selects DSR options
|
|
Command
|
Function
|
|
í *P0
|
DSR standard
|
|
*P1
|
DSR on for 200ms after aborted call
|
|
*P2
|
DSR follows DCD during handshake
|
|
*P3
|
DSR follows DCD during handshake and DSR wink
|
|
DETECTION PHASE
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] #En [cmds]
|
|
Description:
|
Enables/disables detection phase before the negotiation of V.42 protocol
|
|
Command
|
Function
|
|
#E0
|
Detection phase disabled
|
|
í #E1
|
Detection phase enabled
|
|
DIAL LINE BACK-UP
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] #Bn [cmds]
|
|
Description:
|
Controls dial line back-up selection
|
|
Command
|
Function
|
|
í #B0
|
Dial line back-up disabled
|
|
#B1
|
Dial line back-up enabled; when leased line is in failure the modem automatically uses switched line until power-down
|
|
#B2
|
Dial line back-up enabled with automatic look-back. When leased line is in failure, modem uses switched line for time specified by register S28
|
|
#B4
|
Dial line back-up controlled by C116 DTE interface circuit
|
|
#B5
|
Dial line back-up enabled with automatic look-back. When leased line is in failure, modem uses switched line for time specified by register S28. LEDs managed differently from #B2
|
|
DISPLAY BLACKLIST NUMBERS
|
|
Type:
|
Configuration
|
|
Format:
|
AT [cmds] *Bn [cmds]
|
|
Description:
|
Displays blacklist numbers
|
|
Command
|
Function
|
|
*B0
|
Displays delayed and forbidden numbers
|
|
*B1
|
Displays delayed numbers
|
|
*B2
|
Displays forbidden numbers
|
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DISPLAY CONFIGURATION
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Type:
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Immediate
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Format:
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AT [cmds] *Cn [cmds]
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Description:
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Displays active configuration. At the end of the list, it is possible to display the error message relative to the connection state.
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DISPLAY STORED NUMBER
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Type:
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Immediate
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Format:
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AT [cmds] *Nn [cmds]
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Description:
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Displays stored number for DTR/1 direct call in V.25bis mode
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DTE SPEED
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Type:
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Configuration
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Format:
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AT [cmds] *In [cmds]
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Description:
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Controls DTE interface data rate
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Command
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Function
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í *I0
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Automode enabled
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*I1
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300bps
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*I4
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1200
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*I5
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2400bps
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*I6
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4800bps
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*I7
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7200bps
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*I8
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9600bps
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*I10
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14.4Kbps
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*I11
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19.2Kbps
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*I13
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38.4Kbps
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*I14
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57.6Kbps
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*I15
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115.2Kbps
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EXTENDED RESULT CODES
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Type:
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Configuration
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Format:
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AT [cmds] #Xn [cmds]
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Description:
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Enables/disables extended code CONNECT messages to indicate buffer or error correction activation (ATX)
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Command
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Function
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í #X0
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Extended result codes disabled
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#X1
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/BUF and /REL messages enabled
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#X2
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Extended result codes enabled
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#X3
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Extended result codes enabled. ONL/OFL messages disabled in V.25bis
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FLOW CONTROL DURING RETRAIN
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Type:
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Configuration
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Format:
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AT [cmds] #Kn [cmds]
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Description:
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Determines flow control handling during retrain phases
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Command
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Function
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í #K0
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Flow control option during retrain disabled
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#K1
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Flow control option during retrain follows &K
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FLOW CONTROL TYPE
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Type:
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Configuration
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Format:
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AT [cmds] *Kn [cmds]
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Description:
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Sets type of flow control used by modem
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Command
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Function
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í *K0
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CTS forced high
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*K1
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XON/XOFF flow control enabled
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*K2
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CTS off during handshake
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*K3
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CTS off during handshake & XON/XOFF flow control enabled
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*K4
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CTS off in off-line
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*K5
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CTS off in off-line & XON/XOFF flow control enabled
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HALF DUPLEX SIMULATION
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Type:
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Configuration
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Format:
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AT [cmds] #Hn [cmds]
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Description:
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Enables/disables half duplex simulation
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Command
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Function
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í #H0
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Half-Duplex simulation disabled
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#H1
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Half-Duplex simulation enabled
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HANDSHAKE BREAK
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Type:
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Configuration
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Format:
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AT [cmds] #Pn [cmds]
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Description:
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Enables/disables handshake abort if DTE sends data during handshake
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Command
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Function
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í #P0
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Handshake abort enabled
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#P1
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Handshake abort disabled
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LINE FLOW CONTROL
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Type:
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Configuration
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Format:
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AT [cmds] *Fn [cmds]
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Description:
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Controls the flow of data between local and remote modems
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Command
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Function
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í *F0
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Remote flow control disabled
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*F1
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Remote flow control enabled
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MINIMUM LINE SPEED
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Type:
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Configuration
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Format:
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AT [cmds] #Fn [cmds]
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Description:
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Determines minimum data rate
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Command
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Function
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í #F0
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Function disabled. No minimum speed
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#F1
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300bps
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#F3
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1200/75bps
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#F4
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1200bps
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#F5
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2400bps
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#F6
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4800bps
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#F7
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7200bps
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#F8
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9600bps
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#F9
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12.0Kbps
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#F10
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14.4Kbps
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#F11
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16.8Kbps
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#F12
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19.2Kbps
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#F13
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21.6Kbps
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#F14
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24.0Kbps
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#F15
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26.4Kbps
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#F16
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28.8Kbps
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#F17
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31.2Kbps
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#F18
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33.6Kbps
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OVERSPEED SELECTION
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Type:
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Configuration
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Format:
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AT [cmds] *On [cmds]
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Description:
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Sets type of flow control used by modem
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Command
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Function
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í *O0
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Overspeed +1%: -2.5%
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*O1
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Overspeed +2.3%: -2.5%
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PREFIX DIALING
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Type:
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Configuration
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Format:
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AT [cmds] #Wn [cmds]
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Description:
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Enables the automatic dialing of a prefix before every number. Prefix is stored in location 19 of the memory
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Command
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Function
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í #W0
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Automatic prefix dialing enabled
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#W1
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Automatic prefix dialing disabled
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REMOTE ACCESS CONTROL
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Type:
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Configuration
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Format:
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AT [cmds] #Tn [cmds]
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Description:
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Sets remote access control
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Command
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Function
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#T0
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Remote access control disabled
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#T4
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Modem enabled for remote access, download request and loop 2 remote test
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í #T5
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Remote access and download request disabled
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#T6
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Request for remote access control sent
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#T7
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Request for download of the configuration indicated by registers S65 and S66 sent
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SIGNAL QUALITY ACTION CONTROL
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Type:
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Configuration
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Format:
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AT [cmds] *Qn [cmds]
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Description:
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Controls signal quality action
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Command
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Function
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í *Q0
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Signal quality action disabled
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*Q1
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Retrain enabled
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*Q2
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Fallback enabled (V.34, V.32bis, V.32, or V.22 mode)
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*Q3
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Disconnects after first aborted retrain
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SPECIAL MODE
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Type:
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Configuration
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Format:
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AT [cmds] #Vn [cmds]
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Description:
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Selects V.23 full duplex special functioning mode
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Command
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Function
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í #V0
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V.23 automatic mode: 75bps transmit, 1200bps receive (originate), 1200bps transmit, 75bps receive (answer)
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#V1
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75bps transmit, 1200bps receive fixed
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#V2
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1200bps transmit, 75bps receive fixed
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S-REGISTER DISPLAY
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Type:
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Immediate
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Format:
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AT [cmds] *S [cmds]
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Description:
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Displays values stored in S-registers
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SYNCHRONOUS CLOCK CONTROL
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Type:
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Configuration
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Format:
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AT [cmds] *Xn [cmds]
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Description:
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Forces modem’s transmit and receive clock at the DTE interface
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Command
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Function
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*X0
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Synchronous clocks are on in data mode only
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*X1
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Synchronous clocks are always on
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TRANSMISSION LEVEL - LEASED
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Type:
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Configuration
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Format:
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AT [cmds] !Ln [cmds]
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Default:
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10
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Range:
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3-15
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Unit:
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-1 dBm
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Description:
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Sets the signal level for transmission over leased phone lines
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TRANSMISSION LEVEL - SWITCHED
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Type:
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Configuration
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Format:
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AT [cmds] *Ln [cmds]
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Default:
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10
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Range:
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3-15
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Unit:
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-1 dBm
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Description:
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Sets the signal level for transmission over switched phone lines
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V.25BIS DTR/1 STORED NUMBER
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Type:
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Immediate
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Format
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AT [cmds] *Zxxxx [cmds]
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Description:
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Stores a number for DTR/1 operation in V.25bis mode. Must be placed at the end of command string
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V.25BIS MODE
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Type:
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Configuration
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Format:
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AT [cmds] *Vn [cmds]
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Description:
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Enables/disables V.25bis mode
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Command
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Function
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*V0
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V.25bis in DTR/2 asynchronous
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*V1
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V.25bis in DTR/1 synchronous/asynchronous (&M)
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*V2
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V.25bis in DTR/2 HDLC
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*V7
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Returns in AT mode
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