Maestro Executive 144FM Technical Reference Manual Download Page 18 | Manualshive

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Summary of Contents for Executive 144FM

Page 1: ......

Page 2: ...the art Di ital Signal Processing circuitry I WARNING UNDER NO CIRCUMSTANCES SHOULD YOU ALLOW YOUR MODEM TO REMAIN CONNECTED TO THE TELEPHONE LINE WHEN NOT IN USE DAMAGE CAUSED TO THE MODEM BY LIGHTNI...

Page 3: ...d Printed in Australia No part of this publication may be reproduced transmitted transcribed stored in a retreival system or translated into any language or computer language in any form by any means...

Page 4: ...rn Networking Protocol MNP 2 5 l Compatibility 2 5 2 MNP 3 Way Handshake 2 5 3 MNP Data Mode 2 6 Diagnostics 2 6 l Analogue Loopback 2 6 2 Analogue Loop SelfTest 2 6 3 Remote Digital Loopback RDL 2 6...

Page 5: ...oop self test Analogue loop and analogue loop self test Digital loop test Power on self test 144 digit telephone number directory allowing four telephone numbers each a maximum length of 36 digits to...

Page 6: ...ect a remote modem s desired connection See the detailed section on AT commands for further information 2 2 2 Automode Detect Automode detection is enabled by the ATNl command and allows the Executive...

Page 7: ...and detected according to the format that was sensed during speed and format detection 10 2 RTS CTS Flow Control The Executive Series modem controls the CTS output When CTS is OFF the DTE is prevente...

Page 8: ...er receiving 1 6 I 10 seconds of continuous SPACE If optioned by the ATYO command the modem sends 4 I 10 seconds of continuous SPACE if the DTR goes OFF or if ATH is received from the DTE If carrier i...

Page 9: ...gotiation by pass the detection and negotiation phases and proceed at once with the fallback actions specified in 836 This option can be used to force MNP Modem hangs up Modem stays on line and a Dire...

Page 10: ...arger than 2048 entries is allowed for one way compression only AT Mn Set Oneffwo Way Compression Mode Selects the one two way compression mode when using BTLZ compression AT P Clear BTLZ Dictionary T...

Page 11: ...is then delivered to the DTE In non MNP mode any data received while the modem is in command mode is lost MNP Class 5 Data Compression This MNP mode may be enabled or disabled by using the AT Cn comma...

Page 12: ...SIS expires Remote digital loopback with selftest RDI Sl can only be initiated ifa connection exists at 1200 or 2400 bitsper second i i _ Analogue Joopback is initiated by issuing the AT Tl command a...

Page 13: ...gh 3 5 3 1 Command Guidelines Each AT command has a list of possible parameters with its default value The default value is loaded at initialisation i e power on or ATZ command If a command requires a...

Page 14: ...er none 24 Table 3 1 AT Command Summary Cont d COMMAND TITLE DEFAULT AT An Maximum MNP Block Size 3 AT Bn Transmit Break 3 AT Gn Modem To Modem Flow Control 0 AT Kn Break Control 5 AT Ln MNP Block Tra...

Page 15: ...lt code If it detects a busy signal it returns a BUSY result code If the 5 seconds of silence is detected the modem continues dialling the dial string w Wait For Dialtone Before Dialling Causes the Ex...

Page 16: ...a result of ATI In an ON to OFF transition of D1R with the AT Dl option in effect the user may cause the modem to go on hook disconnect by issuing the ATH command Parameters n e O l Default None Res11...

Page 17: ...mmand Parameters n 0 1 2 Default 0 Result Codes OK ATT ATQn ATVn ATSn ATSn x COMMAND if retrain is not successful in the time specified by 87 Causes the modem to return to data mode Causes the modem t...

Page 18: ...ltone and busy signal Sends CONNECT message when a connection is establishedby blind dialling Modem ignores dialtone and busy signal Sends CONNECT XXXX message reflecting bit rate when a connection is...

Page 19: ...em ignores the setting of this command Parameters n 0 3 4 or 5 Default 3 Result Codes OK ERROR AT KO AT KJ AT K4 AT KS Command Options Telephone Jack Selection Determines how the auxiliary relay is co...

Page 20: ...n 0 6 Default 5 Result Codes OK for O 6 ERROR otherwise Command Options AT QO Selects asynchronous operation in the Direct Mode DTE speed must match the telephone line speed AT Q1 Selects synchronous...

Page 21: ...on is comprised of a list of storable parameters illustrated in the AT V corrunand These settings are restored to the active configuration upon receiving an ATZn command or at power up see AT Y comman...

Page 22: ...tion of the signal a long break is the same as a short break MNP Block Transfer Control Determines whether the modem will use Block or Stream mode for MNP link DESCRIPTION Parameters Default Result Co...

Page 23: ...ous state This command can be executed only if a physical connection exists and will return the NO CARRIER message if there is no connection or an appropriate connect message if a reliable link connec...

Page 24: ...mmarised in Table 4 1 along with their default values Registers denoted with an in Table 4 1 may be stored in one of the two user profiles by entering the AT Wn command One of these profiles may be lo...

Page 25: ...ime the Executive Series processes the Backspace character Range O 32 ASCII decimal Default 8 Backspace Wait Time For Blind Dialling Sets the length of time to pause after the Executive Series S6 goes...

Page 26: ...in Dual Tone Multi Frequency DTMF Sll dialling This value has no effect on pulse dialling Range 65 255 milliseconds Dejau 1 95 milliseconds Escape Code Guard Time Sets the time delay required immediat...

Page 27: ...Default 5 51 Table 4 2 S Register Definitions Cont d Reserved Bit Mapped Options Indicates the status ofcommand options Bit O O AT T5 1 AT T4 Bit l 2 3 Local DTE rate O 0 300bps 1 600 bps 2 1200 bps 3...

Page 28: ...for the remote modem to acknowledge all data in the modem buffer before disconnecting Iftime expires before all data is sent the NO CARRIER result code wilt be issued to indicate that data has been l...

Page 29: ...M 848 7 Enable negotiation 848 128 Disable negotiation by pass the detection and negotiation phases and proceed at once with the fallback action specified in S36 Can be used to force MNP Break HandHng...

Page 30: ...Table Bit Position Bit 7 Bit 6 Bit 5 Bit4 Bit3 Bit2 Bit 1 BitO Decimal 128 64 32 16 8 4 2 1 Weighting Examples 11 0 0 0 0 1 0 1 l 45 0 0 1 0 1 1 0 1 217 l 1 0 1 l 0 0 I 255 I I I l I I 1 I The informa...

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