AT Commands

A  Answer Command
Bn  Communications Options
D  Dial Command
En  Select Command Character Echo Option
Hn  Control The Switchhook
I0  Identify The Product Code
I2  Perform ROM Checksum Test
I7  Version Number
Ln  Select Speaker Volume Level
Mn  Select Speaker Function Option
Nn  Select Negotiate Handshake Option
On  Go Online Command
P  Select Pulse Dialing Method
Qn  Select Result Code Option
Sn=  Write To An S-Register
Sn?  Read An S-Register
T  Select Tone Dialing Method
Vn  Select Response Format Option
Wn  Select Extended Result Code
Xn  Select Call Progress Option
Yn  Select Long Space Disconnect Option
Zn  Perform Soft Reset
&An  Select Originate/Answer Role For Autoanswer
&Cn  Select Data Carrier Detect Option
&Dn  Select Data Terminal Ready Option
&F  Load Factory Default Profile
&Gn  Select Guard Tone Option
&Kn  Select Flow ConTDol Option
&Pn  Select Pulse Dialing Parameters
&Qn  Select Communications Mode Option
&Rn  Select RTS/CTS Option
&Sn  Select Data Set Ready Option
&T0  Terminate Test In Process
&T1  Initiate Local Analog Loopback
&T3  Perform Local Digital Loopback
&T4  Enable Granting Of RDL Requests
&T5  Deny Granting Of RDL Requests
&T6  Initiate Remote Digital Loopback
&T7  Initiate RDL With Self Test
&T8  Local Loopback With Self Test
&T19  Perform RTS/CTS Cable Test
&Un  Disable TDellis Coding
&V  View Configuration Profiles
&Wn  Store Active Profile
&Xn  Select Sync TDansmit Clock Source
&Yn  Select Stored Profile For Hard Reset
&Zn=  Store Telephone Number
,  Perform Pause
=  Write To An S-Register
?  Read An S-Register
P  Select Pulse Dialing
T  Tone

S-Registers

S0  Ring After Which To Answer
S1  Ring Count
S2  Hayes Escape Character
S3  Carriage Return Character
S4  Line Feed Character
S5  Backspace Character
S6  Wait Before Blind Dialing
S7  Wait For Carrier
S8  Pause Time For Comma
S9  Carrier Recovery Time
S10  Lost Carrier Hang Up Delay
S11  DTMF Dialing Speed
S12  Hayes Escape Guard Time
S16  Test in Progress
S18  Modem Test Timer
S19  AutoSync Options
S25  Detect DTD Change
S26  RTS To CTS Delay Interval
S30  Inactivity Timeout
S31  XON Character
S32  XOFF Character
S36  Negotiation Failure TDeatment
S37  Desired DCE Line Speed
S38  Hang-up Timeout
S43  Current Line Speed
S44  Framing Technique
S46  Protocol/Compression Selection
S48  Feature Negotiation Action
S49  Buffer Low Limit
S50  Buffer High Limit
S70  Maximum Number of ReTDansmissions
S73  No Activity Timeout
S82  Break Selection
S86  Connection Failure Cause Code
S91  Select Dial-up Line TDansmit Level
S95  Extended Result Code Bit Map
S97  V.32 Late Connecting Handshake Timing
S105  Frame Size
S108  Signal Quality Selector
S109  Carrier Speed Selector
S110  V.32/V.32 bis Selector
S113  Calling Tone ConTDol
S121  Use of DTD
S141  Detection Phase Timer
S142  Online Character Format
S144  Autobaud Speed Group Selection