USRobotics 3Com manual Extended AT Command Set, Modem is always in &B1 mode

Models: 3Com

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Zn (0,1,2,3,4,5)

Reset and load configuration n

$

AT command set help screen

Note: C, K commands are not implemented, will respond OK when these commands are encountered. Ten phone numbers are stored in NVRAM.

Defaults are underlined.

Alps-specific modifications to the commands are in italics

Extended AT Command Set

&An (0,1,2,3)

ARQ result codes Enable

&Bn

Unused. Will respond OK, but no action taken:

 

modem is always in &B1 mode.

&Cn (0,1)

CD Override

&Dn (0,1,2,3)

Data Terminal Ready signal

&Fn (0,1,2)

Load factory setting

&Gn (0,1,2)

Guard tone

&Hn (0,1,2,3)

Transmit flow control

&In (0,1,2,3,4,5)

Receive software flow control

&Kn (0,1,2,3)

Data compression

&Mn (0,4,5)

Error control

&Nn (0,1,2,3,4,5,6,7,8,

DCE link rate. (Maximum DCE link rate when

9,10,11,12,13,14,15,16)

&U is not set to 0)

&Pn (0,1)

Make/Break ratio

&Rn (1,2)

Receive hardware flow control

&Sn (0,1)

DSR option

&Tn (0,1,3,4,5,6,7,8)

Diagnostic test, default is 5

&Un (0,1,2,3,4,5,6,7,8,

DCE link rate minimum

9,10,11,12,13,14,15,16)

 

&Wn (0,1)

Write current configuration NVRAM templates

&Yn (0,1,2,3)

Break handling

&Zn=s (0,1,2,3)

Writes phone number string s to NVRAM at position n

&Zn=L (0,1,2,3)

Writes Last executed dial string to NVRAM at position n

&Zn? (0,1,2,3)

Displays the phone number stored at position n

&ZL?

Displays the last executed dial string

&$

Extended AT command help screen

Facsimile Commands

 

+FCLASS=n (0,1,2.0)

Class Identification and Control (0)

+FTS=n (0,255)

Stop Transmission and Pause

+FRS=n (0,255)

Wait For Silence

+FTM=n (3,24,48,72,73,74,

Transmit Data with Carrier

96,97,98,121,122,145,146)

 

+FRM=n (3,24,48,72,73,74,

Receive Data with Carrier

96,97,98,121,122,145,146)

 

+FTH=n (3,24,48,72,73,74,

Transmit HDLC Data with Carrier

96,97,98,121,122,145,146)

 

+FRH=n (3,24,48,72,73,74,

Receive HDLC Data with Carrier

96,97,98, 121,122,145,146)

 

 

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USRobotics 3Com manual Extended AT Command Set, Modem is always in &B1 mode