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# U.S. ROBOTICS, INC.
COURIER HST
Modem Type Data (synchronous/asynchronous)
Maximum Data Rate 9600bps
Data Bus External
Data Modulation Protocol Bell 103A/212A
ITU-T V.22bis
USR HST
Error Correction/Compression MNP5
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Line in | CN1 | DC power | CN4 |
|------------------+----------+-------------------+----------|
| Line out | CN2 | Power switch | SW2 |
|------------------+----------+-------------------+----------|
| RS-232/422 | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTR SIGNAL |
|------------------------------------------------------------|
| Setting | SW1/1 |
|----------------------------+-------------------------------|
| » On | DTR forced high |
|----------------------------+-------------------------------|
| Off | DTR normal |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES |
|------------------------------------------------------------|
| Setting | SW1/2 |
|----------------------------+-------------------------------|
| » Off | Verbal result codes enabled |
|----------------------------+-------------------------------|
| On | Numeric result codes enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES DISPLAY |
|------------------------------------------------------------|
| Setting | SW1/3 |
|----------------------------+-------------------------------|
| » On | Display disabled |
|----------------------------+-------------------------------|
| Off | Display enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ECHO COMMANDS DISPLAY |
|------------------------------------------------------------|
| Setting | SW1/4 |
|----------------------------+-------------------------------|
| » Off | Local echo enabled |
|----------------------------+-------------------------------|
| On | Local echo disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO ANSWER |
|------------------------------------------------------------|
| Setting | SW1/5 |
|----------------------+-------------------------------------|
| » On | Modem does not answer on first ring |
|----------------------+-------------------------------------|
| Off | Modem answers on first ring |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CARRIER DETECT |
|------------------------------------------------------------|
| Setting | SW1/6 |
|----------------------------+-------------------------------|
| » Off | CD normal |
|----------------------------+-------------------------------|
| On | CD forced high |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MULTILINE PHONE INSTALLATION |
|------------------------------------------------------------|
| Setting | SW1/7 |
|----------------------------+-------------------------------|
| » Off | Single phone connected |
|----------------------------+-------------------------------|
| On | Multiple phones connected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AT COMMAND SET |
|------------------------------------------------------------|
| Setting | SW1/8 |
|----------------------------+-------------------------------|
| » On | AT command set recognized |
|----------------------------+-------------------------------|
| Off | AT command set disabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ESCAPE CODE |
|------------------------------------------------------------|
| Setting | SW1/9 |
|---------+--------------------------------------------------|
| » On | Go to command mode and display OK result code |
| | when escape character is received |
|---------+--------------------------------------------------|
| Off | Disconnect, go to command mode and display NO |
| | CARRIER when escape character is received |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER PROFILE |
|------------------------------------------------------------|
| Setting | SW1/10 |
|----------------------------+-------------------------------|
| » Off | Use stored profile |
|----------------------------+-------------------------------|
| On | Use factory default |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TX/RX PIN ASSIGNMENT |
|------------------------------------------------------------|
| Setting | SW3 |
|----------------------------+-------------------------------|
| » Off | Normal operation |
|----------------------------+-------------------------------|
| On | Reverse TX/RX pin assignments |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+-------+----------+-----------------------------------|
| HS | Red | On | Modem is operating at 9600bps |
|-----+-------+----------+-----------------------------------|
| HS | Red | Off | Modem is operating at slower than |
| | | | 9600bps |
|-----+-------+----------+-----------------------------------|
| AA | Red | On | Auto-answer enabled |
|-----+-------+----------+-----------------------------------|
| AA | Red | Off | Auto-answer disabled |
|-----+-------+----------+-----------------------------------|
| CD | Red | On | Carrier signal detected |
|-----+-------+----------+-----------------------------------|
| CD | Red | Off | Carrier signal not detected |
|-----+-------+----------+-----------------------------------|
| OH | Red | On | Modem is off-hook |
|-----+-------+----------+-----------------------------------|
| OH | Red | Off | Modem is on-hook |
|-----+-------+----------+-----------------------------------|
| RD | Red | Blinking | Modem is receiving data |
|-----+-------+----------+-----------------------------------|
| RD | Red | Off | Modem is not receiving data |
|-----+-------+----------+-----------------------------------|
| TD | Red | Blinking | Modem is transmitting data |
|-----+-------+----------+-----------------------------------|
| TD | Red | Off | Modem is not transmitting data |
|-----+-------+----------+-----------------------------------|
| TR | Red | On | DTR signal is high |
|-----+-------+----------+-----------------------------------|
| TR | Red | Off | DTR signal is low |
|-----+-------+----------+-----------------------------------|
| MR | Red | On | Power is on |
|-----+-------+----------+-----------------------------------|
| MR | Red | Off | Power is off |
|-----+-------+----------+-----------------------------------|
| MR | Red | Blinking | Modem is retraining or in test |
| | | | mode. |
|-----+-------+----------+-----------------------------------|
| RS | Red | On | RTS signal is high |
|-----+-------+----------+-----------------------------------|
| RS | Red | Off | RTS signal is low |
|-----+-------+----------+-----------------------------------|
| CS | Red | On | CTS signal is high |
|-----+-------+----------+-----------------------------------|
| CS | Red | Off | CTS signal is low |
|-----+-------+----------+-----------------------------------|
| EC | Red | On | Error correction enabled |
|-----+-------+----------+-----------------------------------|
| EC | Red | Off | Error correction disabled |
|-----+-------+----------+-----------------------------------|
| EC | Red | Blinking | Modem is retransmitting data |
|-----+-------+----------+-----------------------------------|
| AL | Red | On | Analog loopback self test mode |
| | | | enabled. |
|-----+-------+----------+-----------------------------------|
| AL | Red | Off | Normal operation |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S13 |
|------------------------------------------------------------|
| Format | AT [cmds] S13=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS13=139<CR> |
|-----------------+------------------------------------------|
| Default: | 0 |
|-----------------+------------------------------------------|
| Range: | 0 - 255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls DTR reset, DTR dialing, reset |
| | dialing, and MNP3. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+--------+----------------------------------------|
| 0 | » 0 1 | DTR normal. |
| | | |
| | | Reset on low DTR. |
|----------+--------+----------------------------------------|
| 1 | » 0 1 | Normal auto answer operation. |
| | | |
| | | When ring is received, enter originate |
| | | and listen for answer tone. |
|----------+--------+----------------------------------------|
| 2 | » 0 1 | Pause 250ms before displaying result |
| | | codes. |
| | | |
| | | Immediate result code display. |
|----------+--------+----------------------------------------|
| 3 | » 0 1 | DTR dialing disabled. |
| | | |
| | | DTR dialing enabled. |
|----------+--------+----------------------------------------|
| 4 | » 0 1 | Reset dialing disabled. |
| | | |
| | | Reset dialing enabled. |
|----------+--------+----------------------------------------|
| 5 | » 0 | Not used. |
|----------+--------+----------------------------------------|
| 6 | » 0 1 | MNP 3 enabled. |
| | | |
| | | MNP 3 disabled. |
|----------+--------+----------------------------------------|
| 7 | » 0 1 | Hardware reset disabled. |
| | | |
| | | Hardware reset enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S15 |
|------------------------------------------------------------|
| Format: | AT [cmds] S15=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS15=139<CR> |
|----------------+-------------------------------------------|
| Default: | 0 |
|----------------+-------------------------------------------|
| Range: | 0 - 255 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls HST high frequency equalization, |
| | online fallback, back channel, |
| | non-error-correcting mode buffer, MNP4, |
| | BS/DEL switch, and MNP compliance. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | » 0 1 | HST high frequency equalization |
| | | enabled. |
| | | |
| | | HST high frequency equalization |
| | | disabled. |
|----------+-------+-----------------------------------------|
| 1 | » 0 1 | Online fallback enabled. |
| | | |
| | | Online fallback disabled. |
|----------+-------+-----------------------------------------|
| 2 | » 0 1 | 450bps back channel enabled. |
| | | |
| | | 450bps back channel disabled. |
|----------+-------+-----------------------------------------|
| 3 | » 0 1 | Non-error-correcting mode transmit |
| | | buffer set to 1.5KB. |
| | | |
| | | Non-error-correcting mode transmit |
| | | buffer set to 128 bytes. |
|----------+-------+-----------------------------------------|
| 4 | » 0 1 | MNP 4 enabled. |
| | | |
| | | MNP 4 disabled. |
|----------+-------+-----------------------------------------|
| 5 | » 0 1 | Use backspace key for delete disabled. |
| | | |
| | | Use backspace key for delete enabled. |
|----------+-------+-----------------------------------------|
| 6 | » 0 1 | MNP normal. |
| | | |
| | | MNP adjusted for non compliant modems. |
|----------+-------+-----------------------------------------|
| 7 | » 0 1 | Proprietary network compatibility |
| | | disabled. |
| | | |
| | | Proprietary network compatibility |
| | | enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK LENGTH |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S21=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS21=20<CR> |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | Unidentified |
|--------------+---------------------------------------------|
| Unit: | 10 ms |
|--------------+---------------------------------------------|
| Description: | Sets the length of Error correction mode |
| | breaks sent from DCE to DTE. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Yn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &Y0<CR> |
|--------------+---------------------------------------------|
| Description: | Configures action of break signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &Y0 | Break empties buffer. |
|--------------+---------------------------------------------|
| » &Y1 | Break empties buffer and is sent |
| | immediately. |
|--------------+---------------------------------------------|
| &Y2 | Break does not empty buffer and is sent |
| | immediately. |
|--------------+---------------------------------------------|
| &Y3 | Break does not empty buffer and is sent |
| | with transmitted data. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED UPPER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Nn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &N1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Sets required connection speed if &U is set |
| | to 0. Otherwise, sets fastest allowed |
| | connection speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » &N0 | Variable. |
|--------------+---------------------------------------------|
| &N1 | 300bps |
|--------------+---------------------------------------------|
| &N2 | 1200bps |
|--------------+---------------------------------------------|
| &N3 | 2400bps |
|--------------+---------------------------------------------|
| &N4 | 4800bps |
|--------------+---------------------------------------------|
| &N5 | 7200bps |
|--------------+---------------------------------------------|
| &N6 | 9600bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISCONNECT DISPLAY |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S17? [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS17?<CR> |
|--------------+---------------------------------------------|
| Default: | Read only |
|--------------+---------------------------------------------|
| Range: | 1-6, 254, 255 |
|--------------+---------------------------------------------|
| Description: | Displays the reason for a disconnect during |
| | error correcting mode. |
|--------------+---------------------------------------------|
| Value | Meaning |
|--------------+---------------------------------------------|
| S17=1 | Received data different than requested. |
|--------------+---------------------------------------------|
| S17=2 | Incompatible MNP protocol. |
|--------------+---------------------------------------------|
| S17=3 | Connection request parameters unknown. |
|--------------+---------------------------------------------|
| S17=4 | Remote modem retry timeout. |
|--------------+---------------------------------------------|
| S17=5 | Inactivity timeout. |
|--------------+---------------------------------------------|
| S17=6 | Destination user not found. |
|--------------+---------------------------------------------|
| S17=254 | Peer protocol error. |
|--------------+---------------------------------------------|
| S17=255 | User initiated disconnect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ERROR CORRECTION MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Mn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &M1 %C1<CR> |
|--------------+---------------------------------------------|
| Description: | Selects active error correction protocols. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &M0 | Normal mode only. |
|--------------+---------------------------------------------|
| » &M4 | Auto-detect mode. |
|--------------+---------------------------------------------|
| &M5 | ARQ mode only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &A1 %C1<CR> |
|--------------+---------------------------------------------|
| Description: | Selects extended result codes. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &A0 | Extended result codes disabled. |
|--------------+---------------------------------------------|
| » &A1 | ARQ result codes enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S23=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS23=20<CR> |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 11-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XOFF. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XON |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S22=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS22=20<CR> |
|--------------+---------------------------------------------|
| Default: | 17 |
|--------------+---------------------------------------------|
| Range: | 11-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL PASSTHROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &In [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &I0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Allows modem to act on, then transmit |
| | XON/XOFF characters. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » &I0 | Software flow control disabled. |
|--------------+---------------------------------------------|
| &I1 | XON/XOFF passthrough enabled. |
|--------------+---------------------------------------------|
| &I2 | XON/XOFF passthrough disabled. |
|--------------+---------------------------------------------|
| &I3 | Hewlett-Packard host mode. |
|--------------+---------------------------------------------|
| &I4 | Hewlett-Packard Terminal mode. |
|--------------+---------------------------------------------|
| &I5 | XON/XOFF passthrough for non error |
| | correction mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Hn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &H0 A<CR> |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » &H0 | Flow control disabled. |
|--------------+---------------------------------------------|
| &H1 | CTS/RTS flow control enabled. |
|--------------+---------------------------------------------|
| &H2 | XON/XOFF flow control enabled. |
|--------------+---------------------------------------------|
| &H3 | CTS/RTS and XON/XOFF flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PAUSE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] / [cmds] |
|--------------+---------------------------------------------|
| Example: | AT /// &W<CR> |
|--------------+---------------------------------------------|
| Description: | 125ms pause for each /. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP SCREENS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT <prefix>$ |
|--------------+---------------------------------------------|
| Example: | AT &$<CR> |
|--------------+---------------------------------------------|
| Description: | Shows command help screens for all commands |
| | beginning with the given prefix, or no |
| | prefix if none is given. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $ | Shows ATx help screen. |
|--------------+---------------------------------------------|
| &$ | Shows AT& help screen. |
|--------------+---------------------------------------------|
| D$ | Shows ATDx help screen. |
|--------------+---------------------------------------------|
| S$ | Shows S-register help screen. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S19=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS19=20<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | Unidentified |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| NO CARRIER DISPLAY |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S20? [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS20?<CR> |
|--------------+---------------------------------------------|
| Default: | Read only |
|--------------+---------------------------------------------|
| Range: | 0-7 |
|--------------+---------------------------------------------|
| Description: | Displays the reason for a NO CARRIER result |
| | code.. |
|--------------+---------------------------------------------|
| Value | Meaning |
|--------------+---------------------------------------------|
| S20=0 | Key press abort. |
|--------------+---------------------------------------------|
| S20=1 | DTR low. |
|--------------+---------------------------------------------|
| S20=2 | Escape code sent. |
|--------------+---------------------------------------------|
| S20=3 | Connection broken. |
|--------------+---------------------------------------------|
| S20=4 | Inactivity timeout. |
|--------------+---------------------------------------------|
| S20=5 | Automatic hangup with error correction |
| | incompatibility . |
|--------------+---------------------------------------------|
| S20=6 | Error correction retry timeout. |
|--------------+---------------------------------------------|
| S20=7 | Error correction received disconnect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REGISTER S18 |
|------------------------------------------------------------|
| Note: This register is reserved and should not be changed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPEAT COMMAND STRING |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] > [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *D1 > #E1<CR> |
|--------------+---------------------------------------------|
| Description: | Causes modem to repeat command string until |
| | a keyboard key is pressed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Example: | AT I1 O<CR> |
|--------------+---------------------------------------------|
| Description: | Displays modem properties. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports product code. |
|--------------+---------------------------------------------|
| I1 | Reports ROM checksum result. |
|--------------+---------------------------------------------|
| I2 | Reports RAM checksum result. |
|--------------+---------------------------------------------|
| I3 | Reports call duration. |
|--------------+---------------------------------------------|
| I4 | Reports current command settings. |
|--------------+---------------------------------------------|
| I5 | Reports current NVRAM settings. |
|--------------+---------------------------------------------|
| I6 | Reports current connection’s statistics. |
|--------------+---------------------------------------------|
| I7 | Reports configuration. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S16=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS16=0<CR> |
|--------------+---------------------------------------------|
| Description: | Controls analog loopback pattern and dial |
| | tests |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S16=0 | Testing disabled. |
|--------------+---------------------------------------------|
| S16=1 | Analog loopback test enabled. |
|--------------+---------------------------------------------|
| S16=2 | Dial test enabled. |
|--------------+---------------------------------------------|
| S16=4 | Test pattern enabled. |
|--------------+---------------------------------------------|
| S16=5 | Analog loopback with test pattern enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TIME DISPLAY |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Kn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT K1 *L2 #E1<CR> |
|--------------+---------------------------------------------|
| Description: | Displays the current call time or clock |
| | time. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » K0 | Display length of last call. |
|--------------+---------------------------------------------|
| K1 | Display actual time. |
+------------------------------------------------------------+