Multi-Tech Systems MT5600DSVD manual Zy=x Store Telephone Number, Data Compression Control

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MultiModemDSVD User Guide

 

4 AT Commands, S-Registers, and Result Codes

Command:

&Zy=x

 

Store Telephone Number

Values:

 

 

y = 0–3

 

 

 

x = Dialing command

Default:

 

None

Description:

 

 

Stores telephone dial string x in memory location y. Each tele-

 

 

 

phone number dial string can contain up to 34 digits. Dial the

 

 

 

stored number using the command ATDS=y.

 

 

 

 

 

 

 

Note: DTR dialing uses the number stored in memory location 0.

 

 

 

 

Command:

%Cn

 

Data Compression Control

Values:

 

 

n = 0, 1, 2, or 3

Default:

 

3

Description:

 

 

Enables or disables data compression negotiation. The modem

 

 

 

can only perform data compression on an error-corrected link.

 

%C0

Disables data compression.

 

%C1

Enables MNP 5 data compression negotiation.

 

%C2

Enables V.42bis data compression negotiation.

 

%C3

 

Enables both V.42bis and MNP 5 data compression negotiation.

 

 

 

 

 

 

 

Note: This command controls both V.42bis and MNP-5 data

 

 

 

compression, whereas the &E14 and &E15 commands control

 

 

 

only V.42bis data compression. The command in effect is the

 

 

 

one last entered.

 

 

 

 

Command:

%En

 

Line Quality Monitor

Values:

 

 

n = 0, 1, or 2

Default:

 

2

Description:

 

 

Controls whether or not the modem will automatically moni-

 

 

 

tor the line quality and request a retrain (%E1) or fall back to a

 

 

 

lower speed when line quality is insufficient and fall forward

 

 

 

to a faster speed when line quality is sufficient (%E2).

 

%E0

Disable line quality monitor and auto-retrain.

 

%E1

Enable line quality monitor and auto-retrain.

 

%E2

Enable line quality monitor and fallback/fall forward.

Command:

%L

 

Line Signal Level

Values:

 

None

Default:

 

None

Description:

%L

 

Returns a value that indicates the received signal level. The

 

 

 

value returned is a direct indication (DAA-dependent) of the

 

 

 

receive level at the MDP, not at the telephone line connector.

 

 

 

For example, 009 = -9 dBm, 043 = -43 dBm, and so on.

Command:

%Q

 

Line Signal Quality

Values:

 

None

Default:

 

None

Description:

%Q

 

Reports the line signal quality (DAA-dependent) as a three-

 

 

 

digit number. Returns the higher order byte of the EQM value.

 

 

 

Based on the EQM value, retrain or fallback/fall forward may

 

 

 

be initiated if enabled by %E1 or %E2.

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Contents Page Record of Revisions Introduction AT Commands, S-Registers & Result Codes Appendix E Upgrading the Modem Introduction Product Description FeaturesIntroduction Data What Is in Your Modem Package? Related ManualsInstallation We supply Safety WarningsWhat You Will Need You supplyOpening the Modem Mount the FeetChange the Speaker Jumper Changing the Speaker Jumper Location of speaker jumperLine Connection Connect the Modem to Your SystemRS232 Connection Phone Connection Power ConnectionPower-On Test Microphone ConnectionRemoving Your Old Modem Driver Install the Modem DriverInstalling the Modem Driver Install and Configure Your Software Operation Front Panel Configuring the Modem Connecting to the InternetDial-Up Networking To install and run Dial-Up Networking in Windows 95 orTo dial your Internet access provider Dial-Up Networking in Windows 95/98Dial-Up Networking in Windows NT To install Dial-Up NetworkingDial-Up Networking in Windows Me Select Start Settings Network and Dial-up Connections Dial-Up Networking in WindowsVoice Operation To Originate a Voice Call in Speakerphone ModeFax Operation To Answer a Dsvd Call Using the Headset To Answer a Voice Call in Speakerphone ModeTo Originate a Dsvd Call Using the Headset References AT Commands Registers Result Codes AT Commands AT Command Summary Hook Control Echo Command Mode CharactersDS=y Dial Stored Telephone Number Information RequestDisplay Legacy Parameters Monitor Speaker VolumeMonitor Speaker Mode Modulation HandshakePulse Dialing Return Online to Data ModeResult Codes Enable/Disable Select RegisterResult Code Selection Modem ResetConnect Message Control Long Space DisconnectData Terminal Ready DTR Control Error Correction ModesData Carrier Detect DCD Control Modem-Initiated Flow Control 22bis Guard Tone Control Load Factory Settings 42bis Data Compression Telephone Jack ControlTest Commands Communications ModeAsynchronous Communications Mode Pulse Dial Make/Break RatioSelect Profile for Hard Reset Display Current ConfigurationStore Current Configuration Display Last Connection StatisticsZy=x Store Telephone Number Line Signal LevelLine Signal Quality Data Compression Control\Bn Transmit Break PCM Code Selection\An Maximum MNP Block Size \Kn Break Control\Nn Error Correction Mode Selection \Vn Single Line Connect MessageModulation Selection SubparametersMNP Extended Services Flash Memory Download Command #CID=n Caller IDDistinctive Ring Control Command +++ATCR Escape Sequence Voice CommandsCommand $SBn Serial Port Baud Rate Command -SMS=nData/DSVD ModeCommand #CLS=n Data, Fax, or Voice/Audio Select Dsvd Enable/DisableCommand #BDR=n Baud Rate Select Command #MDL? Identify ModelRegister Unit Range Default Description RegistersS32 S37 Register Unit Range Default Description S86 Result Codes Terse Verbose DescriptionProtocol ALT +FCERROR Solving Problems None of the Indicators Light Modem Does Not Respond to Commands LightModem Dials But Cannot Connect Modem4Disconnects While Online Data Is Being Lost Modem4Cannot Connect When AnsweringFile Transfer4Is Slower Than It Should Be Fax and Data4Software Can’t Run at the Same Time There Are Garbage4 Characters on the MonitorModem4Doesn’t Work with Caller ID Appendixes Appendix a Regulatory Compliance FCC Part 68 TelecomFCC Part Industry CanadaFax Branding Statement Canadian Limitations NoticeNew Zealand Telecom Warning Notice EMC, Safety, and R&TTE Directive ComplianceInternational Modem Restrictions South African Notice Appendix B Technical Specifications MultiModemDSVD User Guide Technical Specifications Voice Compression Test procedure Local Analog Loopback Test V.54 LoopRemote Digital Loopback Test V.54 Loop Figure C-2. Remote digital loopback testLocal Digital Loopback Test V.54 Loop Figure C-3. Local digital loopback testMultiModemDSVD User Guide Loopback Tests Service Limited WarrantyOnline Warranty Registration North American ProductsTechnical Support International ProductsOrdering Accessories Internet SitesUpgrade Overview Identify the Modem FirmwareIdentify the Current Firmware Version Download the Upgrade FileExtract the Upgrade Files Clear Your Stored ParamentersUpgrade the Modem’s Firmware Restore Your ParametersIndex MultiModemDSVD User Guide Index MultiModemDSVD User Guide Index MultiModemDSVD User Guide Index