MEGAHERTZ CORPORATION ===================== CC4144/CC4144-MIT/CC4144-NEC/CC4144-NOK/XJ2144 Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 14.4Kbps Maximum Fax Rate 14.4Kbps Data Bus PCMCIA type II Fax Class Class I & II Data Modulation Bell 103A/212A Protocol ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29 Protocol Error MNP10, MNP5, V.42, V.42bis Correction/Compression V1300 Proprietary AT Command Set +------------------------------------------------------------+ | AUTO-RETRAIN | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT %En | |--------------+---------------------------------------------| | Example: | AT %E1 | |--------------+---------------------------------------------| | Description: | Selects auto-retrain mode. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> %E0 | Auto-retrain disabled. | |--------------+---------------------------------------------| | %E1 | Auto-retrain enabled. | |--------------+---------------------------------------------| | %E2 | Fallback/fall forward enabled. | |--------------+---------------------------------------------| | %E3 | Auto-retrain enabled, fast hang-up when | | | line quality is poor. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S14 | |------------------------------------------------------------| | Format | AT [cmds] S14=n [cmds] | |-----------------+------------------------------------------| | Example: | ATS14=138 | |-----------------+------------------------------------------| | Default: | 138 | |-----------------+------------------------------------------| | Range: | 0-174 | |-----------------+------------------------------------------| | Unit: | Bit-mapped | |-----------------+------------------------------------------| | Description: | Controls echo, result codes, result code | | | display, dial mode, and answer/originate | | | mode. | |------------------------------------------------------------| | Bit | Value | Function | |----------+------------+------------------------------------| | 0 | 0 | Not used. | |----------+------------+------------------------------------| | 1 | 0 >> 1 | Command echo disabled. | | | | | | | | Command echo enabled. | |----------+------------+------------------------------------| | 2 |>> 0 1 | Result codes enabled. | | | | | | | | Result codes disabled. | |----------+------------+------------------------------------| | 3 | 0 >> 1 | Display result codes in numeric | | | | format. | | | | | | | | Display result codes in verbose | | | | format. | |----------+------------+------------------------------------| | 4 | 0 | Not used. | |----------+------------+------------------------------------| | 5 |>> 0 1 | Tone dial enabled. | | | | | | | | Pulse dial enabled. | |----------+------------+------------------------------------| | 6 | 0 | Not used. | |----------+------------+------------------------------------| | 7 | 0 >> 1 | Answer mode enabled. | | | | | | | | Originate mode enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S21 | |------------------------------------------------------------| | Format | AT [cmds] S21=n [cmds] | |----------------+-------------------------------------------| | Example: | ATS21=4 | |----------------+-------------------------------------------| | Default: | 4 | |----------------+-------------------------------------------| | Range: | 0 - 253 | |----------------+-------------------------------------------| | Unit: | Bit-mapped | |----------------+-------------------------------------------| | Description: | Selects jack type, CTS signal, low DTR | | | action, DCD signal, DSR signal, and the | | | Long Space Disconnect function. | |------------------------------------------------------------| | Bit | Value | Function | |----------+-------+-----------------------------------------| | 0 |>> 0 1 | Selects RJ-11, RJ-41S, or RJ45S jack. | | | | | | | | Selects RJ-12 or RJ-13 jack. | |----------+-------+-----------------------------------------| | 1 | 0 | Not used. | |----------+-------+-----------------------------------------| | 2 | 0 >> 1 | CTS follows RTS. | | | | | | | | CTS forced high. | |----------+-------+-----------------------------------------| | 4, 3 |>> 00 | DTR signal ignored. | | | 01 10 | | | | 11 | Modem goes to command mode on low DTR. | | | | | | | | Modem disconnects on low DTR. | | | | Auto-Answer is disabled. | | | | | | | | Modem is initialized on low DTR. | |----------+-------+-----------------------------------------| | 5 |>> 0 1 | DCD forced high. | | | | | | | | DCD normal. | |----------+-------+-----------------------------------------| | 6 |>> 0 1 | DSR forced high. | | | | | | | | DSR normal. | |----------+-------+-----------------------------------------| | 7 |>> 0 1 | Long Space Disconnect function | | | | disabled. | | | | | | | | Long Space Disconnect function enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S22 | |------------------------------------------------------------| | Format | AT [cmds] S22=n [cmds] | |----------------+-------------------------------------------| | Example: | ATS22=118 | |----------------+-------------------------------------------| | Default: | 118 | |----------------+-------------------------------------------| | Range: | 0-127 | |----------------+-------------------------------------------| | Unit: | Bit-mapped | |----------------+-------------------------------------------| | Description: | Controls speaker volume and controls, and | | | limits results codes. | |------------------------------------------------------------| | Bit | Value | Function | |-----------+-------+----------------------------------------| | 1, 0 | 00 >> | Off volume. | | | 01 10 | | | | 11 | On volume. | | | | | | | | Medium level volume. | | | | | | | | High level volume. | |-----------+-------+----------------------------------------| | 3, 2 | 00 >> | Speaker off. | | | 01 10 | | | | 11 | Speaker off on carrier. | | | | | | | | Speaker always on. | | | | | | | | Speaker on during handshake. | |-----------+-------+----------------------------------------| | 6, 5, 4 | 000 | Basic result codes only enabled. | | | 100 | | | | 101 | Basic and connection speed result | | | 110 >> | codes enabled. | | | 111 | | | | | Basic and connection speed result | | | | codes and dialtone detection enabled. | | | | | | | | All result codes except dialtone | | | | detection enabled. | | | | | | | | All result codes enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S23 | |------------------------------------------------------------| | Format | AT [cmds] S23=n [cmds] | |------------------+-----------------------------------------| | Example: | ATS23=55 | |------------------+-----------------------------------------| | Default: | 55 | |------------------+-----------------------------------------| | Range: | 0-255 | |------------------+-----------------------------------------| | Unit: | Bit-mapped | |------------------+-----------------------------------------| | Description: | Grants/denies remote digital loopback, | | | controls DTE rate and parity, and sets | | | guard tone. | |------------------------------------------------------------| | Bit | Value | Function | |------------+--------+--------------------------------------| | 0 | 0 >> 1 | Remote digital loopback denied. | | | | | | | | Remote digital loopback allowed. | |------------+--------+--------------------------------------| | 3, 2, 1 | 000 | Sets serial port speed to 0-300bps. | | | 001 | | | | 010 >> | Sets serial port speed to 600bps. | | | 011 | | | | 100 | Sets serial port speed to 1200bps. | | | 101 | | | | 110 | Sets serial port speed to 2400bps. | | | | | | | | Sets serial port speed to 4800bps. | | | | | | | | Sets serial port speed to 9600bps. | | | | | | | | Sets serial port speed to 19200bps. | |------------+--------+--------------------------------------| | 5,4 | 00 01 | Parity even. | | | 10 >> | | | | 11 | Not used. | | | | | | | | Parity odd. | | | | | | | | No Parity. | |------------+--------+--------------------------------------| | 7, 6 | 00 01 | Guard tone disabled. | | |>> 10 | | | | | Guard tone disabled. | | | | | | | | Guard tone 1800Hz enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S27 | |------------------------------------------------------------| | Format | AT [cmds] S27=n [cmds] | |----------------+-------------------------------------------| | Example: | ATS27=73 | |----------------+-------------------------------------------| | Default: | 73 | |----------------+-------------------------------------------| | Range: | 0-127 | |----------------+-------------------------------------------| | Unit: | Bit-mapped | |----------------+-------------------------------------------| | Description: | Selects sync/async mode, Line type, | | | internal clock, and ITU-T/Bell modes. | |------------------------------------------------------------| | Bit | Value | Function | |-----------+-------+----------------------------------------| | 3, 1, 0 | 000 | Asynchronous mode, serial port speed | | | 001 | follows connect speed. | | | 101 >> | | | | 110 | Asynchronous off-line command mode and | | | | synchronous connect mode. | | | | | | | | Error-correcting mode. | | | | | | | | Asynchronous mode, serial port speed | | | | locked. | |-----------+-------+----------------------------------------| | 2 |>> 0 1 | Dial up line. | | | | | | | | Leased line. | |-----------+-------+----------------------------------------| | 5, 4 |>> 00 | Internal DTE transmit clock source. | | | 01 10 | | | | | External DTE transmit clock source. | | | | | | | | Slave DTE transmit clock source. | |-----------+-------+----------------------------------------| | 6 |>> 0 1 | CCITT mode. | | | | | | | | Bell mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S28 | |------------------------------------------------------------| | Format | AT [cmds] S28=n [cmds] | |----------------+-------------------------------------------| | Example: | ATS28=0 | |----------------+-------------------------------------------| | Default: | 0 | |----------------+-------------------------------------------| | Range: | 0 | |----------------+-------------------------------------------| | Unit: | Bit-mapped | |----------------+-------------------------------------------| | Description: | Controls V.23 split speed, V.23 split | | | screen, V.23 half duplex, and pulse | | | dialing. | |------------------------------------------------------------| | Bit | Value | Function | |----------+-------+-----------------------------------------| | 0 |>> 0 1 | V.23 split speed operation disabled. | | | | | | | | V.23 split speed operation enabled. | |----------+-------+-----------------------------------------| | 1 |>> 0 1 | Select 75bps transmit, 1200bps receive. | | | | | | | | Select 1200bps transmit, 75bps receive. | |----------+-------+-----------------------------------------| | 2 | 0 | Not used. | |----------+-------+-----------------------------------------| | 4, 3 |>> 00 | 39ms make/61ms break at 10pps. | | | 01 10 | | | | 11 | 33ms make/67ms break at 10pps. | | | | | | | | 39ms make/61ms break at 20pps. | | | | | | | | 33ms make/67ms break at 20pps. | |----------+-------+-----------------------------------------| | 5 | 0 | Not used | |----------+-------+-----------------------------------------| | 7, 6 |>> 00 | MNP at highest speed | | | 01 10 | | | | | MNP at 1200bps | | | | | | | | MNP at 1200bps | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S31 | |------------------------------------------------------------| | Format | AT [cmds] S31=n [cmds] | |-----------------+------------------------------------------| | Example: | ATS31=40 | |-----------------+------------------------------------------| | Default: | 194 | |-----------------+------------------------------------------| | Range: | 0-255 | |-----------------+------------------------------------------| | Unit: | Bit-mapped | |-----------------+------------------------------------------| | Description: | Controls auto-baud function and result | | | codes. | |------------------------------------------------------------| | Bit | Value | Function | |-----------+--------+---------------------------------------| | 0 | 0 | Not used. | |-----------+--------+---------------------------------------| | 1 | 0 >> 1 | Auto-baud disabled. | | | | | | | | Auto-baud enabled. | |-----------+--------+---------------------------------------| | 3, 2 |>> 00 | DTE speed displayed in result codes. | | | 01 10 | | | | | Extended result codes enabled; DCE | | | | speed displayed in result codes. | | | | | | | | DCE speed displayed in result codes. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S40 | |------------------------------------------------------------| | Format | AT [cmds] S40=n [cmds] | |-----------------+------------------------------------------| | Example: | ATS40=104 | |-----------------+------------------------------------------| | Default: | 104 | |-----------------+------------------------------------------| | Range: | 0 - 255 | |-----------------+------------------------------------------| | Unit: | Bit-mapped | |-----------------+------------------------------------------| | Description: | Controls power level and break handling; | | | selects MNP extended services, link | | | negotiation, and block size. | |------------------------------------------------------------| | Bit | Value | Function | |------------+--------+--------------------------------------| | 0 | i0 | MNP10 disabled. | | | | | | |>> 1 | MNP10 enabled. | |------------+--------+--------------------------------------| | 1 | 0 1 | Link will be negotiated at highest | | | | possible speed. | | | | | | | | Link will be negotiated at 1200bps. | |------------+--------+--------------------------------------| | 2 |>> 0 1 | Power level adjustment enabled. | | | | | | | | Power level adjustment disabled. | |------------+--------+--------------------------------------| | 5, 4, 3 | 000 | \K0 | | | 001 | | | | 010 | \K1 | | | 011 | | | | 100 >> | \K2 | | | 101 | | | | | \K3 | | | | | | | | \K4 | | | | | | | | \K5 | |------------+--------+--------------------------------------| | 7, 6 | 00 >> | MNP block size is 64 characters. | | | 01 10 | | | | 11 | MNP block size is 128 characters. | | | | | | | | MNP block size is 192 characters. | | | | | | | | MNP block size is 256 characters. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT-MAPPED REGISTER S41 | |------------------------------------------------------------| | Format | AT [cmds] S41=n [cmds] | |-----------------+------------------------------------------| | Example: | ATS41=131 | |-----------------+------------------------------------------| | Default: | 131 | |-----------------+------------------------------------------| | Range: | 0 - 255 | |-----------------+------------------------------------------| | Unit: | Bit-mapped | |-----------------+------------------------------------------| | Description: | Selects compression, auto-retrain, flow | | | control, and MNP mode. | |------------------------------------------------------------| | Bit | Value | Function | |-----------+---------+--------------------------------------| | 1 - 0 | 00 01 | Data compression disabled. | | | 10 >> 11 | | | | | MNP5 enabled. | | | | | | | | V.42bis enabled. | | | | | | | | MNP5 and V.42bis enabled. | |-----------+---------+--------------------------------------| | 6, 2 |>> 00 01 | Auto-retrain disabled. | | | 10 | | | | | Auto-retrain enabled. | | | | | | | | Fallback/fall forward enabled. | |-----------+---------+--------------------------------------| | 3 |>> 0 1 | Flow control disabled. | | | | | | | | Flow control enabled. | |-----------+---------+--------------------------------------| | 4 |>> 0 1 | Stream mode for MNP. | | | | | | | | Block mode for MNP. | |-----------+---------+--------------------------------------| | 5 | 0 | Not used. | |-----------+---------+--------------------------------------| | 7 | 0 >> 1 | Fallback to V.22bis/V.22 disabled. | | | | | | | | Fallback to V.22bis/V.22 enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK SEND | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Bn [cmds] | |--------------+---------------------------------------------| | Example: | AT \B3 &W | |--------------+---------------------------------------------| | Range: | 1-9 | |--------------+---------------------------------------------| | Unit: | 100 ms | |--------------+---------------------------------------------| | Description: | Sends break to modem. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Kn [cmds] | |--------------+---------------------------------------------| | Example: | AT \K1 | |--------------+---------------------------------------------| | Description: | Configures action of break signal. | |------------------------------------------------------------| | Command | Break from | Modem | Break | | | DTE | receives \B | received | | | | | from remote | | | | | modem | |---------------+---------------+--------------+-------------| | \K0 | Online | Break sent | Buffers | | | command mode | to remote | cleared, | | | enabled, send | modem and | break sent | | | no break to | buffered | to DTE. | | | remote modem. | cleared. | | |---------------+---------------+--------------+-------------| | \K1 | Break sent to | Break sent | Buffers | | | remote modem | to remote | cleared, | | | and buffered | modem and | break sent | | | cleared. | buffered | to DTE. | | | | cleared. | | |---------------+---------------+--------------+-------------| | \K2 | Online | Send break | Break sent | | | command mode | to remote | immediately | | | enabled, send | modem | to DTE. | | | no break to | immediately. | | | | remote modem. | | | |---------------+---------------+--------------+-------------| | \K3 | Send break to | Send break | Break sent | | | remote modem | to remote | immediately | | | immediately. | modem | to DTE. | | | | immediately. | | |---------------+---------------+--------------+-------------| | \K4 | Online | Send break | Break sent | | | command mode | with | with | | | enabled, send | transmitted | received | | | no break to | data. | data to the | | | remote modem. | | DTE. | |---------------+---------------+--------------+-------------| | \K5 | Send break | Send break | Break sent | | | with | with | with | | | transmitted | transmitted | received | | | data. | data. | data to the | | | | | DTE. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CELLULAR TRANSMISSION LEVEL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] @Mn [cmds] | |--------------+---------------------------------------------| | Example: | AT @M26 &W | |--------------+---------------------------------------------| | Default: | 26 | |--------------+---------------------------------------------| | Range: | 10 - 31 | |--------------+---------------------------------------------| | Unit: | -1 dBm | |--------------+---------------------------------------------| | Description: | Sets the signal level for transmission when | | | in leased line mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION AND ERROR CORRECTION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT %Cn | |--------------+---------------------------------------------| | Example: | AT %C3 *Y1 | |--------------+---------------------------------------------| | Description: | Selects data compression and error | | | correction. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %C0 | Data compression disabled. | |--------------+---------------------------------------------| | %C1 | MNP5 enabled. | |--------------+---------------------------------------------| | %C2 | V.42bis enabled. | |--------------+---------------------------------------------| |>> %C3 | V.42bis and MNP5 enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPROMISE EQUALIZER | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] :En [cmds] | |--------------+---------------------------------------------| | Example: | AT :E &W | |--------------+---------------------------------------------| | Description: | Controls V.32 compromise equalizer. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | :E0 | Equalizer disabled. | |--------------+---------------------------------------------| |>> :E1 | Equalizer enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONFIGURATION PROFILES | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \Sn [cmds] | |--------------+---------------------------------------------| | Example: | AT \S0 | |--------------+---------------------------------------------| | Description: | Displays active configuration profiles. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONNECT MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Nn [cmds] | |--------------+---------------------------------------------| | Example: | AT \N1 DT555-1212 | |--------------+---------------------------------------------| | Description: | Sets connect mode. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \N0 | Normal mode enabled. | |--------------+---------------------------------------------| | \N2 | Reliable mode enabled. | |--------------+---------------------------------------------| |>> \N3 | Auto-reliable mode enabled. | |--------------+---------------------------------------------| | \N4 | LAPM mode enabled. | |--------------+---------------------------------------------| | \N5 | MNP mode enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLASH DIAL MODIFIER TIME | |------------------------------------------------------------| | Format | AT [cmds] S29=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS29=0 | |--------------+---------------------------------------------| | Default: | 70 | |--------------+---------------------------------------------| | Range: | 0-70 | |--------------+---------------------------------------------| | Unit: | 10 ms | |--------------+---------------------------------------------| | Description: | Time the modem will go on-hook upon | | | receiving the ! dial modifier in dial | | | string. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Gn [cmds] | |--------------+---------------------------------------------| | Example: | AT G1 &K3 | |--------------+---------------------------------------------| | Description: | Selects modem port flow control. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \G0 | Flow control disabled. | |--------------+---------------------------------------------| | \G1 | Flow control enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL CHARACTER - XOFF | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S33=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS33=20 | |--------------+---------------------------------------------| | Default: | 19 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | ASCII | |--------------+---------------------------------------------| | Description: | Sets the character used to represent XOFF. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL CHARACTER - XON | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S32=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS32=20 | |--------------+---------------------------------------------| | Default: | 17 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | ASCII | |--------------+---------------------------------------------| | Description: | Sets the character used to represent XON. | +------------------------------------------------------------+ +------------------------------------------------------------+ | HANDSHAKE OPTIONS | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] S48=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S48=7 | |--------------+---------------------------------------------| | Description: | Controls the V.42 handshake sequence. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | S48=0 | V.42 negotiation disabled. | |--------------+---------------------------------------------| |>> S48=7 | V.42 negotiation enabled. | |--------------+---------------------------------------------| | S48=128 | V.42 disabled; fallback according to S36. | +------------------------------------------------------------+ +------------------------------------------------------------+ | HDLC ADDRESS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S20=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS20=6 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 1 second | |--------------+---------------------------------------------| | Description: | Sets the HDLC address/BSC character. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LINE SIGNAL LEVEL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %L [cmds] | |--------------+---------------------------------------------| | Example: | AT %L | |--------------+---------------------------------------------| | Description: | Returns value of signal level for | | | transmission at the MDP. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LINE SIGNAL QUALITY | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %Q [cmds] | |--------------+---------------------------------------------| | Example: | AT %Q &W | |--------------+---------------------------------------------| | Description: | Reports line signal quality. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP10 LINK NEGOTIATION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] *Hn [cmds] | |--------------+---------------------------------------------| | Example: | AT *H0 -Q1 | |--------------+---------------------------------------------| | Description: | Sets the speed at which MNP10 link | | | negotiation will occur. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> *H0 | Link will be negotiated at highest possible | | | speed. | |--------------+---------------------------------------------| | *H1 | Link will be negotiated at 1200bps. | |--------------+---------------------------------------------| | *H2 | Link will be negotiated at 4800bps. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP10 PARAMETERS | |------------------------------------------------------------| | Format | AT [cmds] S201=n [cmds] | |-----------------+------------------------------------------| | Example: | ATS201=58 | |-----------------+------------------------------------------| | Default: | 58 | |-----------------+------------------------------------------| | Range: | 10 - 63 | |-----------------+------------------------------------------| | Unit: | Bit-mapped | |-----------------+------------------------------------------| | Description: | Controls MNP10 parameters. | |------------------------------------------------------------| | Bit | Value | Function | |-----------+-------+----------------------------------------| | 4 - 0 | 01011 | Sets leased line transmit attenuation | | | | level to -11dBm. | | | ... | | | | | Sets leased line transmit attenuation | | | 11010 | level to -26dBm. | | | | | | | ... | Sets leased line transmit attenuation | | | | level to -31dBm. | | | 11111 | | |-----------+-------+----------------------------------------| | 5 | 0 | Equalizer disabled. | | | | | | | 1 | Equalizer enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MAXIMUM BLOCK SIZE FOR TRANSMISSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \An [cmds] | |--------------+---------------------------------------------| | Example: | AT \A3 %C1 | |--------------+---------------------------------------------| | Description: | Sets the maximum transmittable block size. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \A0 | MNP block size is 64 characters. | |--------------+---------------------------------------------| | \A1 | MNP block size is 128 characters. | |--------------+---------------------------------------------| | \A2 | MNP block size is 192 characters. | |--------------+---------------------------------------------| |>> \A3 | MNP block size is 256 characters. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP10 COMPRESSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] -Kn [cmds] | |--------------+---------------------------------------------| | Example: | AT %C1 -K1 -Q0 | |--------------+---------------------------------------------| | Description: | Selects MNP10 data compression. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> -K0 | MNP10 disabled. | |--------------+---------------------------------------------| | -K1 | MNP10 enabled. | |--------------+---------------------------------------------| | -K2 | MNP10 enabled on originate mode only. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP10 FALL-BACK | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] -Qn [cmds] | |--------------+---------------------------------------------| | Example: | AT *H0 -Q1 | |--------------+---------------------------------------------| | Description: | Allows MNP10 to fall back to speeds slower | | | than 4800bps. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | -Q0 | MNP10 at 2400 and 1200bps disabled. | |--------------+---------------------------------------------| |>> -Q1 | MNP10 at 2400 and 1200bps enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP10 POWER LEVEL ADJUST | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] )Mn [cmds] | |--------------+---------------------------------------------| | Example: | AT )M1 %C1 | |--------------+---------------------------------------------| | Description: | Controls automatic transmit power level | | | adjustment during MNP 10 link negotiation. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> )M0 | Power level adjustment disabled. | |--------------+---------------------------------------------| | )M1 | Power level adjustment enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP STREAM/BLOCK MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Ln [cmds] | |--------------+---------------------------------------------| | Example: | AT \L1 DT555-1212 | |--------------+---------------------------------------------| | Description: | Selects the transfer mode for MNP. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \L0 | Stream mode for MNP enabled. | |--------------+---------------------------------------------| | \L2 | Block mode for MNP enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REMOTE ACCESS ESCAPE CHARACTER | |------------------------------------------------------------| | Format | AT [cmds] S202=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS202=40 | |--------------+---------------------------------------------| | Default: | 170 | |--------------+---------------------------------------------| | Range: | 0 - 255 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Holds value of ASCII character used as the | | | escape character. | +------------------------------------------------------------+ +------------------------------------------------------------+ | SLEEP TIMER | |------------------------------------------------------------| | Format | AT [cmds] S24=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS24=40 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0 - 255 | |--------------+---------------------------------------------| | Unit: | 1 seconds | |--------------+---------------------------------------------| | Description: | Maximum duration of DTE and DCE inactivity | | | allowed prior to initiating low-power sleep | | | mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TEST MODES | |------------------------------------------------------------| | Format | AT [cmds] S16=n [cmds] | |---------------+--------------------------------------------| | Example: | ATS16=40 | |---------------+--------------------------------------------| | Default: | 0 | |---------------+--------------------------------------------| | Range: | 0-125 | |---------------+--------------------------------------------| | Unit: | Bit-mapped | |---------------+--------------------------------------------| | Description: | Controls loopback tests, analog, digital, | | | remote digital, and self tests. | |------------------------------------------------------------| | Bit | Value | Function | |---------+-------+------------------------------------------| | 0 |>> 0 1 | Local analog loopback not in progress. | | | | | | | | Local analog loopback in progress. | |---------+-------+------------------------------------------| | 1 | 0 | Not used. | |---------+-------+------------------------------------------| | 2 |>> 0 1 | Local digital loopback not in progress. | | | | | | | | Local digital loopback in progress. | |---------+-------+------------------------------------------| | 3 |>> 0 1 | Modem not in remote digital loopback. | | | | | | | | Remote digital loopback in progress. | |---------+-------+------------------------------------------| | 4 |>> 0 1 | Remote digital loopback not requested. | | | | | | | | Remote digital loopback requested. | |---------+-------+------------------------------------------| | 5 |>> 0 1 | Remote digital loopback with self-test | | | | not in progress. | | | | | | | | Remote digital loopback with self-test | | | | in progress. | |---------+-------+------------------------------------------| | 6 | i 0 | Local analog loopback with self-test not | | | | in progress. | | | 1 | | | | | Local analog loopback with self-test in | | | | progress. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TEST MODE - PTT | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %TT [cmds] | |--------------+---------------------------------------------| | Example: | AT %TT &W | |--------------+---------------------------------------------| | Description: | Send PTT test signals for European line | | | test. |