US ROBOTICS NETSERVER I-MODEM/16 modem/telephone/ISDN Settings and Configuration

Card Type	Modem (asynchronous)
Chip Set	Unidentified
Maximum Modem Rate	33.6Kbps
Maximum Fax Rate	14.4Kbps
Data Modulation Protocol	Unidentified
Fax Modulation Protocol	Unidentified
Error Correction/Compression	Unidentified
Fax Class	Class I & II
Data Bus	External

CONNECTIONS
Function	Label		Function		Label
DC power		CN1		RJ-45 jack channel 5/6		CN7
RJ-45 jack channel 1/2		CN3		RJ-45 auxiliary connector		CN8
RJ-45 jack channel 3/4		CN4		RJ-45 console connector		CN9
BNC network connector		CN5		RJ-45 jack channel 7/8		CN10
RJ-45 network connector		CN6		Power switch		SW1
Note: CN3, CN4, CN7, CN10 accept either RJ-11 or RJ-45 connectors.

USER CONFIGURABLE SETTINGS
Setting	Label	Position
Load defaults from NVRAM	SW1/1	Off
Load defaults from ROM	SW1/1	On
Command odd set recognition disabled	SW1/2	Off
Command odd set recognition enabled	SW1/2	On
Factory configured - do not alter	SW1/3	Unidentified
Factory configured - do not alter	SW1/4	Unidentified
Use software configured baud rate	SW2/3	Off
Force DIP switch rate	SW2/3	On
Normal flash memory operation	SW2/4	Off
Erase flash memory on boot-up	SW2/4	On
Factory configured - do not alter	SW2/5-10	Unidentified

CONSOLE PORT BAUD RATE
Rate	SW2/1	SW2/2
9600bps	Off	Off
19.2Kbps	Off	On
38.4Kbps	On	Off
57.6Kbps	On	On

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
LED1	Off	Off	Power off
LED1	Green	On	Power on
LED1	Red	On	Critical failure
LED2	Off	Off	Channel 1 idle
LED2	Green	On	Channel 1 on-line
LED2	Green	Blinking	Channel 1 testing data link layer
LED2	Yellow	Blinking (8 times/sec.)	Channel 1 searching for U interface
LED2	Yellow	Blinking (1 times/sec.)	Channel 1 searching for S/T interface
LED2	Yellow	On	Channel 1 dialing
LED2	Red	On	Channel 1 U interface not found
LED2	Red	Blinking	Channel 1 incorrect SPID
LED3	Off	Off	Channel 2 idle
LED3	Green	On	Channel 2 on-line
LED3	Green	Blinking	Channel 2 testing data link layer
LED3	Yellow	Blinking (8 times/sec.)	Channel 2 searching for U interface
LED3	Yellow	Blinking (1 times/sec.)	Channel 2 searching for S/T interface
LED3	Yellow	On	Channel 2 dialing
LED3	Red	On	Channel 2 U interface not found
LED3	Red	Blinking	Channel 2 incorrect SPID

DIAGNOSTIC LED(S) (CON’T)
LED	Color	Status	Condition
LED4	Off	Off	Channel 3 idle
LED4	Green	On	Channel 3 on-line
LED4	Green	Blinking	Channel 3 testing data link layer
LED4	Yellow	Blinking (8 times/sec.)	Channel 3 searching for U interface
LED4	Yellow	Blinking (1 times/sec.)	Channel 3 searching for S/T interface
LED4	Yellow	On	Channel 3 dialing
LED4	Red	On	Channel 3 U interface not found
LED4	Red	Blinking	Channel 3 incorrect SPID
LED5	Off	Off	Channel 4 idle
LED5	Green	On	Channel 4 on-line
LED5	Green	Blinking	Channel 4 testing data link layer
LED5	Yellow	Blinking (8 times/sec.)	Channel 4 searching for U interface
LED5	Yellow	Blinking (1 times/sec.)	Channel 4 searching for S/T interface
LED5	Yellow	On	Channel 4 dialing
LED5	Red	On	Channel 4 U interface not found
LED5	Red	Blinking	Channel 4 incorrect SPID
LED6	Off	Off	Channel 5 idle
LED6	Green	On	Channel 5 on-line
LED6	Green	Blinking	Channel 5 testing data link layer
LED6	Yellow	Blinking (8 times/sec.)	Channel 5 searching for U interface
LED6	Yellow	Blinking (1 times/sec.)	Channel 5 searching for S/T interface
LED6	Yellow	On	Channel 5 dialing
LED6	Red	On	Channel 5 U interface not found
LED6	Red	Blinking	Channel 5 incorrect SPID
LED7	Off	Off	Channel 6 idle
LED7	Green	On	Channel 6 on-line
LED7	Green	Blinking	Channel 6 testing data link layer
LED7	Yellow	Blinking (8 times/sec.)	Channel 6 searching for U interface
LED7	Yellow	Blinking (1 times/sec.)	Channel 6 searching for S/T interface
LED7	Yellow	On	Channel 6 dialing
LED7	Red	On	Channel 6 U interface not found
LED7	Red	Blinking	Channel 6 incorrect SPID
LED8	Off	Off	Channel 7 idle
LED8	Green	On	Channel 7 on-line
LED8	Green	Blinking	Channel 7 testing data link layer
LED8	Yellow	Blinking (8 times/sec.)	Channel 7 searching for U interface
LED8	Yellow	Blinking (1 times/sec.)	Channel 7 searching for S/T interface
LED8	Yellow	On	Channel 7 dialing
LED8	Red	On	Channel 7 U interface not found
LED8	Red	Blinking	Channel 7 incorrect SPID

DIAGNOSTIC LED(S) (CON’T)
LED	Color	Status	Condition
LED9	Off	Off	Channel 8 idle
LED9	Green	On	Channel 8 on-line
LED9	Green	Blinking	Channel 8 testing data link layer
LED9	Yellow	Blinking (8 times/sec.)	Channel 8 searching for U interface
LED9	Yellow	Blinking (1 times/sec.)	Channel 8 searching for S/T interface
LED9	Yellow	On	Channel 8 dialing
LED9	Red	On	Channel 8 U interface not found
LED9	Red	Blinking	Channel 8 incorrect SPID
LED10	Red	On	POST test
LED10	Green	Blinking (1 times/sec.)	checking for software download
LED10	Green	Blinking (8 times/sec.)	loading NETserver application into RAM
LED10	Green	On	normal operation
LED11	Red	On	POST
LED11	Green	On	Erasing flash memory
LED11	Amber	On	Programming flash memmory
LED11	Off	Off	Normal
LED12	Red	On	Interface failure
LED12	Green	On	Transmitting packet
LED12	Off	Off	Idle
LED13	Red	On	Interface failure
LED13	Green	On	Receiving packet
LED13	Off	Off	Idle
LED14	Red	Blinking	Collision (1 blink per collision)
LED14	Green	On	10 base-T link detected
LED14	Off	Off	10 base-2 link connection (If 10 base-T is being used, this indicates a bad link)
LED15	Green	Blinking	Characters being received/transmitted through serial port
LED15	Off	Off	Serial port idle
LED16	Off	Off	Power off
LED16	Green	On	Power on
LED16	Red	On	Critical failure
LED17	Off	Off	Channel 1 idle
LED17	Green	On	Channel 1 on-line
LED17	Green	Blinking	Channel 1 testing data link layer
LED17	Yellow	Blinking (8 times/sec.)	Channel 1 searching for U interface
LED17	Yellow	Blinking (1 times/sec.)	Channel 1 searching for S/T interface
LED17	Yellow	On	Channel 1 dialing
LED17	Red	On	Channel 1 U interface not found
LED17	Red	Blinking	Channel 1 incorrect SPID

DIAGNOSTIC LED(S) (CON’T)
LED	Color	Status	Condition
LED18	Off	Off	Channel 2 idle
LED18	Green	On	Channel 2 on-line
LED18	Green	Blinking	Channel 2 testing data link layer
LED18	Yellow	Blinking (8 times/sec.)	Channel 2 searching for U interface
LED18	Yellow	Blinking (1 times/sec.)	Channel 2 searching for S/T interface
LED18	Yellow	On	Channel 2 dialing
LED18	Red	On	Channel 2 U interface not found
LED18	Red	Blinking	Channel 2 incorrect SPID
LED19	Off	Off	Channel 3 idle
LED19	Green	On	Channel 3 on-line
LED19	Green	Blinking	Channel 3 testing data link layer
LED19	Yellow	Blinking (8 times/sec.)	Channel 3 searching for U interface
LED19	Yellow	Blinking (1 times/sec.)	Channel 3 searching for S/T interface
LED19	Yellow	On	Channel 3 dialing
LED19	Red	On	Channel 3 U interface not found
LED19	Red	Blinking	Channel 3 incorrect SPID
LED20	Off	Off	Channel 4 idle
LED20	Green	On	Channel 4 on-line
LED20	Green	Blinking	Channel 4 testing data link layer
LED20	Yellow	Blinking (8 times/sec.)	Channel 4 searching for U interface
LED20	Yellow	Blinking (1 times/sec.)	Channel 4 searching for S/T interface
LED20	Yellow	On	Channel 4 dialing
LED20	Red	On	Channel 4 U interface not found
LED20	Red	Blinking	Channel 4 incorrect SPID
LED21	Off	Off	Channel 5 idle
LED21	Green	On	Channel 5 on-line
LED21	Green	Blinking	Channel 5 testing data link layer
LED21	Yellow	Blinking (8 times/sec.)	Channel 5 searching for U interface
LED21	Yellow	Blinking (1 times/sec.)	Channel 5 searching for S/T interface
LED21	Yellow	On	Channel 5 dialing
LED21	Red	On	Channel 5 U interface not found
LED21	Red	Blinking	Channel 5 incorrect SPID
LED22	Off	Off	Channel 6 idle
LED22	Green	On	Channel 6 on-line
LED22	Green	Blinking	Channel 6 testing data link layer
LED22	Yellow	Blinking (8 times/sec.)	Channel 6 searching for U interface
LED22	Yellow	Blinking (1 times/sec.)	Channel 6 searching for S/T interface
LED22	Yellow	On	Channel 6 dialing
LED22	Red	On	Channel 6 U interface not found
LED22	Red	Blinking	Channel 6 incorrect SPID

DIAGNOSTIC LED(S) (CON’T)
LED	Color	Status	Condition
LED23	Off	Off	Channel 7 idle
LED23	Green	On	Channel 7 on-line
LED23	Green	Blinking	Channel 7 testing data link layer
LED23	Yellow	Blinking (8 times/sec.)	Channel 7 searching for U interface
LED23	Yellow	Blinking (1 times/sec.)	Channel 7 searching for S/T interface
LED23	Yellow	On	Channel 7 dialing
LED23	Red	On	Channel 7 U interface not found
LED23	Red	Blinking	Channel 7 incorrect SPID
LED24	Off	Off	Channel 8 idle
LED24	Green	On	Channel 8 on-line
LED24	Green	Blinking	Channel 8 testing data link layer
LED24	Yellow	Blinking (8 times/sec.)	Channel 8 searching for U interface
LED24	Yellow	Blinking (1 times/sec.)	Channel 8 searching for S/T interface
LED24	Yellow	On	Channel 8 dialing
LED24	Red	On	Channel 8 U interface not found
LED24	Red	Blinking	Channel 8 incorrect SPID

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/

A, B, C, E, F, O, V

&C, &G, &W, &Z

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S26

Note: See MHI Help File for full command documentation.

HELP
Type:	Configuration
Format:	AT [cmds] #$ [cmds]
Description:	Display the help pannels for the octothorpe (#) command set

ADDITIONASL RESULT CODES
Type:	Configuration
Format:	AT [cmds] &An [cmds]
Description:	Controls the display of the additional result codes
Command	Function
í &A0	Do not display ARQ result codes
&A1	Display ARQ result codes
&A2	Display ARQ result codes, HST, V.32, V.FC or V.34 modulation indicator
&A3	Display ARQ result codes and error control indicator LAPM, HST, MNP, SYNC, or NONE

BREAK HANDLING
Type:	Configuration
Format:	AT [cmds] &Yn [cmds]
Description:	Controls the break handling
Command	Function
í &Y0	Destructive, don’t send break
&Y1	Destructive, expedited break sent
&Y2	Nondestructive, expedited break sent
&Y3	Nondestructive un-expedited break sent

CONNECTION RATE
Type:	Configuration
Format:	AT [cmds] &Nn [cmds]
Description:	Controls the connection rate
Command	Function
í &N0	Variable rate
&N1	300bps
&N2	1200bps
&N3	2400bps
&N4	4800bps
&N5	7200bps
&N6	9600bps
&N7	12Kbps
&N8	14.4Kbps
&N9	16.8Kbps
&N10	19.2Kbps
&N11	21.6Kbps
&N12	24Kbps
&N13	26.4Kbps
&N14	28.8Kbps
&N15	31.2Kbps
&N16	33.6Kbps

DATA COMPRESSION
Type:	Configuration
Format:	AT [cmds] &Kn [cmds]
Description:	Controls the data compression
Command	Function
&K0	Data compression disabled
í &K1	Use auto enable/disable data compression
&K2	Data compression always enabled
&K3	Selective data compression

DATA SET READY (DSR)
Type:	Configuration
Format:	AT [cmds] &Sn [cmds]
Description:	Selects DSR options
Command	Function
&S0	DSR forced high
í &S1	DSR high only while modem is handshaking or connected
&S2	DSR and CTS follows CD when carrier is lost
&S3	DSR follows CD when carrier is lost
&S4	Send the computer a DSR signal at the same time as the CD
&S5	Send DSR normally, and follow CTS with CD

DATA TERMINAL READY (DTR)
Type:	Configuration
Format:	AT [cmds] &Dn [cmds]
Description:	Selects modem response to DTR
Note: The action each variant of &D causes depends on the setting of &Q
Command	Function
í &D0	Modem does not respond to DTR
&D1	Modem goes to command mode after DTR goes is off
&D2	Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled.

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
DL	Re-dial last number
DP	Pulse dialing enabled
DR	Reverse frequencies.
DS=n	Dial stored telephone number n
DT	Tone dialing enabled/Pulse dialing disabled
DW	Dialing resumed following dial tone detection
D,	Dialing paused for amount of time specified in S8 register
D"WXY"	Optional method of denoting telephone numbers. Letters enclosed in quotes are interpreted as numbers according to the system found on a telephone keypad.
D@	Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string.
D$	Wait for prompt tone detection function enabled. Waits for prompt tone for amount of time specified by the S7 command.
D;	Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.
D"	Dial the letters that follow
D/	Pause for 125 milliseconds

ERROR CONTROL
Type:	Configuration
Format:	AT [cmds] &Mn [cmds]
Description:	Selects the error control protocol
Command	Mode
í &M0	Normal mode, no error control
&M1	Online synchronous mode
&M4	Normal/ARQ mode,
&M5	ARQ asynchronous mode
&M6	V.25bis synchronous mode.
&M7	V.25bis synchronous mode using HDLC link protocol

FACTORY DEFAULT PROFILE
Type:	Configuration
Format:	AT [cmds] &F [cmds]
Description:	Sets values in active profile to values found in the default profile
Command	Function
í &F0	Load No Flow Control template settings
&F1	Load Hardware Flow Control template settings
&F2	Load Software Flow Control template settings

HARDWARE RESET
Type:	Immediate
Format:	AT [cmds] Z! [cmds]
Description:	If SW1/1 is on, then revert to the settings in NVRAM. If SW1/1 is off, reset to the &F0 configuration template

HELP
Type:	Immediate
Format:	AT [cmds] $
Description:	Display help screens for the AT basic command set

HELP
Type:	Immediate
Format:	AT [cmds] &$
Description:	Display help screens for the & command set

HELP
Type:	Immediate
Format:	AT [cmds] *$
Description:	Display help screens for the * command set

HOOK CONTROL
Type:	Immediate
Format:	AT [cmds] Hn [cmds]
Description:	Selects whether the modem is on-hook or off-hook
Command	Function
í H0	Modem commanded to go on-hook (hang-up)

LINE TYPE
Type:	Configuration
Format:	AT [cmds] &Ln [cmds]
Description:	Selects line type
Command	Line Type
í &L0	Switched line (PSTN/Dial-up)

MODEM CLOCK
Type:	Configuration
Format:	AT [cmds] Kn [cmds]
Description:	Controls the modem clock
Command	Function
í K0	If on-line, display current call duration; if off-line, display the last call’s duration
K1	Display the actual time (set clock using ATI3=HH:MM:SS K1)

RECEIVE DATA FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] &In [cmds]
Description:	Controls the receive data flow control
Command	Jack Type
í &I0	Disables XON/XOFF flow control
&I1	Modem acts on typed XON/XOFF commands, Ctrl -S, or Ctrl -Q and passes them to remote device
&I2	Modem acts on typed XON/XOFF commands but removes them from data stream
&I3	Hewlett Packard host mode
&I4	Hewlett Packard terminal mode
&I5	Enable flow control on the phone link when the connection is not under error control

REPEAT LAST ISSUED COMMAND
Type:	Immediate
Format:	A>
Description:	Repeats last issued command until any key is pressed
Note: Do not precede this command with AT, or follow it with <CR>.

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested
Command	Function
I0	Reports 4 digit product code
I1	Reports results of ROM checksum
I2	Reports results of RAM test
I3	Reports the product name
I4	Reports the current modem settings
I5	Reports the settings stored in NVRAM
I6	Reports statistics for the last call
I7	Reports product configuration
I10	Reports dial security account status information
I11	Displays high speed connection report
I12	Reports ISDN settings

RESULT CODES
Type:	Configuration
Format:	AT [cmds] Qn [cmds]
Description:	Enables modem to send result codes to the DTE
Command	Function
í Q0	Result code sending enabled
Q1	Result code sending disabled
Q2	Suppress result codes when answering

RTS/CTS
Type:	Configuration
Format:	AT [cmds] &Rn [cmds]
Description:	Selects RTS/CTS options
Command	Function
í &R0	CTS follows RTS in data mode; RTS is ignored in command mode.
&R1	CTS forced high, RTS is ignored.
&R2	Enable hardware flow control of received data

SELECT CALL PROGRESS RESULT CODES
Type:	Configuration
Format:	AT [cmds] Xn [cmds]
Description:	Enables selection of tone detection and associated result code format options
Command	Function
X0	Busy and dial tone detection disabled; result codes 0 - 4 enabled.
X1	Busy and dial tone detection disabled; result codes 0 - 5 & 10 enabled.
X2	Busy tone detection disabled, dial tone detection enabled; result codes 0 - 6 & 10 enabled.
X3	Busy tone detection enabled, dial tone detection disabled; result codes 0 - 5, 7 & 10 enabled.
Í X4	Busy and dial tone detection enabled; result codes 0 - 7 & 10 enabled.
X5	Busy tone detection enabled, dial tone detection disabled, all result codes enabled
X6	All result codes enabled
X7	Voice detection disabled, all result codes enabled

SERIAL PORT RATE
Type:	Configuration
Format:	AT [cmds] &Bn [cmds]
Description:	Controls the serial port rate
Command	Function
í &B0	Variable serial port rate
&B1	Fixed serial port rate
&B2	In answer mode use fixed rate for ARQ calls and variable rate for non ARQ calls.

SOFTWARE RESET
Type:	Immediate
Format:	AT [cmds] Z [cmds]
Description:	If SW1/1 is set to on, revert to the settings in NVRAM. If SW1/1 is set to off, reset to the &F0 configuration template

TEST MODES
Type:	Immediate
Format:	AT [cmds] &Tn
Description:	Selects test options
Command	Function
&T0	End current test
&T3	Begin local digital loopback
&T4	Grant remote digital loopback request
&T5	Deny remote digital loopback request
&T6	Request remote digital loopback
&T7	Request remote digital loopback and self-test

TRANSMIT DATA FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] &Hn [cmds]
Description:	Controls the transmit data flow
Command	Function
í &H0	Flow control disabled
&H1	Use hardware flow control enabled
&H2	Use software flow control enabled
&H3	Use both hardware and software flow control enabled

ASSIGN PASSWORD
Type:	Immediate
Format:	AT [cmds] %V=PWn [cmds]
Description:	Assign the password in account n in security account

CALL TYPE
Type:	Configuration
Format:	AT [cmds] *Vn [cmds]
Description:	Set the call type for each B-channel
Command	Function
í *V0	0-5 for B-channel 1
*V1	0-5 for B-channel 2

DIRECTORY NUMBER
Type:	Configuration
Format:	AT [cmds] *Pn [cmds]
Description:	Set the directory number that was assigned to you by your telephone company
Command	Function
í *P1	The DN for B-channel 1
*P2	The DN for B-channel 2

ERASE SECURITY SETTINGS
Type:	Configuration
Format:	AT [cmds] %En [cmds]
Description:	Erases selected security settings
Command	Function
%E1	Erase local access password
%E2	Erase autopass password
%E3	Erase passwords in accounts 0-9
%E4	Erase phone numbers in accounts 0-9
%E5	Disable account, dialback, and new number fields in accouns 0-9

LOCAL ACCESS PASSWORD
Type:	Configuration
Format:	AT [cmds] %Ln [cmds]
Description:	Set local access password

PASSWORD SECURITY
Type:	Immediate
Format:	AT [cmds] %P [cmds]
Description:	Disable password security

POINT TO POINT SELECTION
Type:	Configuration
Format:	AT [cmds] *Mn [cmds]
Description:	Select point to point or multipoint
Command	Function
í *M0	Point to point
*M1	Multipoint

REMOTE CONFIGURATION
Type:	Configuration
Format:	AT [cmds] %Cn [cmds]
Description:	Controls the remote configuration
Command	Function
%C0	Defer configuration changes until the call is ended
%C1	Cancel configuration changes and restore the original configuration
%C2	Force configuration changes to take effect immediately

REMOTE CONFIGURATION
Type:	Configuration
Format:	AT [cmds] %Fn [cmds]
Description:	Configure another device’s data remotely
Command	Function
%F0	No parity, 8 data bits
%F1	Mark parity, 7 data bits
%F2	Odd parity, 7 data bits
%F3	Even parity, 7 data bits

SECURITY ACCOUNTS
Type:	Configuration
Format:	AT [cmds] %An [cmds]
Description:	Create and configure security accounts

SECURITY ACCOUNTS
Type:	Configuration
Format:	AT [cmds] %Sn [cmds]
Description:	Access security accounts

SERIAL PORT RATE
Type:	Configuration
Format:	AT [cmds] %Bn [cmds]
Description:	Remotely configure a modem’s serial port rate
Command	Function
%B0	110bps
%B1	300bps
%B2	600bps
%B3	1200bps
%B4	2400bps
%B5	4800bps
%B6	9600bps
%B7	19200bps
%B8	38400bps
%B9	57600bps
%B10	115200bps

SERVICE PROFILE ID
Type:	Configuration
Format:	AT [cmds] *Sn [cmds]
Description:	Set the service profile ID
Command	Function
í *S1	the SPID for B-channel 1
*S2	The SPID for B-channel 2

SWITCH PROTOCOL
Type:	Configuration
Format:	AT [cmds] *Wn [cmds]
Description:	Set the switch protocol used at the telephone company’s central office
Command	Jack Type
í *W0	AT&T 5ESS Custom
*W1	Northern Telecom DMS-100
*W2	National ISDN-1
*W3	National ISDN-2

TERMINAL ENDPOINT ID
Type:	Configuration
Format:	AT [cmds] *T [cmds]
Description:	Sets the terminal endpoint (TEI)
Command	Function
í *T1	0-63 for B-channel 1
*T2	0-63 for B-channel 2

TONE FREQUENCIES
Type:	Configuration
Format:	AT [cmds] %Tn [cmds]
Description:	Enalbes recognition of the tone frequencies

BIT MAPPED REGISTER
Type:		Register
Format:		AT [cmds] S15=n [cmds]
Unit:		Bit-mapped
Description:		Controls fallback
Bit	Value	Function
0	1	Disable the modem’s extra high frequency equalization if it causes problems on shorter -link calls- for HST modulation only
1	2	Disable online fallback
2	4	Disable 450bps back channel ---HST only
3	8	Reset non-ARQ mode transmit buffer from 1.5Kbytes to 128
4	16	Disable MNP level 4
5	32	Set backspace key to delete
6	64	Alternate MNP setting for some 2400bps MNP modems not made by U.S. Robotics of Microcom.
7	128	Custom applications only

BIT MAPPED REGISTER S16
Type:		Register
Format:		AT [cmds] S16=n [cmds]
Unit:		Bit-mapped
Description:		Controls loopback tests and test pattern
Bit	Value	Function
2	4	Test pattern
3	8	Remote digital loopback

BIT MAPPED REGISTER S53
Type:			Register
Format:		AT [cmds] S53=n [cmds]
Description:		Bit mapped register
Bit	Value		Function
0	1		Dial security enabled
1	2		Prompting enabled
2	4		Local access password protection enabled

BIT MAPPED REGISTER S54
Type:			Register
Format:		AT [cmds] S54=n [cmds]
Description:		Bit mapped register
Bit	Value		Function
0	1		Disable 2400 symbol rate
1	2		Disable 2743 symbol rate
2	4		Disable 2800 symbol rate
3	8		Disable 3000 symbol rate
4	16		Disable 3200 symbol rate
5	32		Disable 3429 symbol rate
6	64		Disable Call Indicate
7	128		Disable V.8

BIT-MAPPED REGISTER S13
Format:		AT [cmds] S13=n [cmds]
Default:		170
Range:		0-174
Unit:		Bit-mapped
Description:		Controls echo, result codes and display, dial mode, and answer/originate mode.
Bit	Value	Function
0	1	Reset when DTR drops
1	2	Reverse normal auto answer mode
2	4	Disable 250 msec pause before result code display
3	8	On DTR signal, Autodial the number stored in NVRAM at position 0
4	16	At power on/reset, auto dial number stored in NVRAM at position 0
5	32	Disable HST
6	64	Disable MNP level 3
7	128	Hardware reset