Multitech BL-Series Bedienungsanleitung PDF herunterladen (Seite 33)

AT Commands for the MT5656ZDX, MT5600ZDX, MT5600BA/BL-Series Modems

Multi-Tech Systems, Inc. Commands Reference Guide (PN S000273D)

MT5600BA/BL–V.90 Commands

Command: &Tn V.54 Test Commands

Values: n = 0, 1, 3, 4, 5, 6, 7, or 8

Default: None

Description: The modem can perform selected test and diagnostic functions. A test can be run only when

the modem is in asynchronous operation in non-error-correction mode (normal or direct

mode). For tests 3, 6, and 7, a connection between the two modems must first be

established. To terminate a test in progress, the escape sequence (+++) must be entered

first, except for parameters 7 and 8. If S18 is non-zero, a test terminates automatically after

the time specified by S18 and displays the OK message.

&T0 Abort. Stop any test in progress.

&T1 Start local analog loopback, V.54 Loop 3. If a connection exists when this command

is issued, the modem hangs up. A CONNECT message is displayed at the start of

the test.

&T3 Start local digital loopback, V.54 Loop 2. If no connection exists, ERROR is returned.

&T4 Enables acknowledgment for remote digital loopback request.

&T5 Ignores acknowledgment for remote digital loopback request.

&T6 Requests a remote digital loopback, V.54 Loop 2, without self-test. If no connection

exists, ERROR is returned. The CONNECT XXXX message is displayed at the start

of the test.

&T7 Requests a remote digital loopback, V.54 Loop 2, with self-test. (In self-test, a test

pattern is looped back and checked by the modem.) If no connection exists, ERROR

is returned. When the test is terminated, the number of detected errors is reported

to the computer.

&T8 Starts local analog loopback, V.54 Loop 3, with self-test. If a connection exists, the

modem hangs up before the test begins. When the test is terminated, the number

of detected errors is reported to the computer.

Command: +MS= Modulation Selection

Values: See description.

Default: See description.

Description: This extended-format command selects modulation and, optionally, enables or disables

automode, specifies the lowest and highest connection rates, selects µ-Law or A-Law

codec type, and specifies the highest transmit rate using one to five subparameters.

The command format is

+MS=[mod][,[automode][,[min_RX_rate][,[max_RX_rate][,[x_law]

[,[reserved][,[max_TX_rate]]]]]]]<CR>

Subparameters that are not entered retain their current value. Commas separate optional

subparameters, and should be inserted to skip a subparameter. Example: +MS=,0,<CR>

disables automode and keeps all other settings at their current values.

+MS? Reports current options in the format

mod,automode,min_RX_rate,max_RX_rate,x_law,reserved,max_TX_rate.

Example: 56,1,300,56000,0,0,33600.

+MS=? Reports supported options in the format (list of supported mod values),(list

of supported automode values),(list of supported min_RX_rate values),(list

of supported max_RX_rate values), (list of supported x_law values), (list of

supported reserved values),(list of supported max_TX_rate values).

Example: (0,1,2,3,9,10,11,56,64,69),(0,1),(300-33600),(300-

56000),(0,1),(0,1),(300-33600).

Subparameters

mod A decimal number that specifies the preferred modulation (automode

enabled) or the modulation to use in originating or answering a connection

(automode disabled).

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 59 60

Kommentare zu diesen Handbüchern

Keine Kommentare

Multitech BL-Series Bedienungsanleitung Seite 33

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Multitech BL-Series