AT command [a] [b]

Description

AT +iA<number>

Accepted address. Incoming calls are only accepted if the called party number equals the phone number configured here. Addresses are compared backwards. So, if you set the accepted address to 12, the called party numbers that end with 12, e.g., 12, 812, 384012, match the configured address. [c]

AT +iO<number>

Origination address. This number is placed as the origination address. [c]

AT +iB<n>

<n>

B-channel data adaptation rate [d]

2

1200 bps

3

2400 bps

4

4800 bps

5

9600 bps

6

19200 bps

7

38400 bps

8

48000 bps

9

56000 bps

AT +iC[<n>]

<n>

Determines whether the modem stays in command mode after call setup.

0

Stays in command mode.

1

Switches to data mode.

AT +iD<n>

<n>

Delay for AT-command response (ms).

0

AT-command response is sent immediately.

1 ... 255

AT-command response is delayed.

AT +iF<n>

<n>

RNA Framing. [e]

0

No framing check (pass data transparently).

1

Force synchronous conversation (PPP).

2

Force asynchronous conversation (PPP).

3

Force synchronous conversation (RAS).

4

Force asynchronous conversation (RAS).

5

Detects required conversation by analyzing incoming data packets.

AT +iG<bitmask>

Bit

Value

RNA patches. Controls the behavior of the ASYNC/SYNC PPP conversion module. See ASYNC/SYNC conversion module for details.

1

1

Reserved, should be zero.

2

2

Reserved, should be zero.

3

4

Reserved, should be zero.

4

8

Pass IPCP (default is track).

5

16

Force patch of IPCP.

6

32

Keep RX ACCM (default is add).

7

64

Keep TX ACCM (default is delete).

8

128

Pass LCP (default is track).

AT +iL<n>

Maximum data frame length. <n> should be in the range of 0 ... 2048. 0 defaults to the maximum frame length supported by the Dialogic^® Diva^® Media Board.

AT +iM<n>

<n>

Working mode

1

Normal operation mode. TTY does not try to preserve the protocol data unit boundaries (streaming). This mode fully emulates the behavior of a "classic" modem or terminal adapter connected via a serial interface.

2

Fax mode. TTY switches to this mode as soon as a Fax CLASS 1 or Fax CLASS 2 command is detected.

3

Voice mode (bit-transparent access to B-channel data).

4

RNA mode. TTY operates in framing mode, investigates protocol data units, and provides ASYNC/SYNC conversion if necessary.

5

BTX over ISDN mode.

6

Frame mode. The TTY preserves the frame boundaries of the ISDN data frames. Note that the Linux TTY interface will stream the data again.

AT +iN<Format>

Format

Numbering plan for destination/origination address and presentation/screening indicators for origination address.

Number1[/Number2[/Number3[/Number4]]]

Specifies the numbering plan identifier for the destination address (Number1), origination address (Number2), presentation indicator - bits [7:6] in octet 3a of origination address (Number3) and screening indicator - bits [2:1] in octet 3a of origination address (Number4). Number1 and Number2 should be in the range 0...127. Number3 and Number4 should be in the range 0...3.

AT +iP<n>

<n>

Specifies the protocol stack used to transfer bearer data.

1

L1 - HDLC, L2 - X.75SLP and V.42bis data compression autodetection in case of incoming connection, L3 - transparent

2

L1 - V.110 synchronous mode, L2 and L3 - transparent

3

L1 - V.110 asynchronous mode, L2 and L3 - transparent

4

L1 - analog modem (synchronous mode), L2 - V.42+V.42bis autodetect, L3 - transparent

5

L1 - analog modem with full negotiation, L2 - V.42+V.42bis autodetect, L3 - transparent

6

L1 - HDLC, L2 - V.120, L3 - TA

7

L1 - Fax, L2 - transparent, L3 - T.30 with ECM, T.6, MR, MMR, polling

8

L1, L2, and L3 - transparent

9

L1 - HDLC, L2, and L3 - transparent

10

L1 - HDLC, L2 - X.75SLP, L3 - BTX

11

external device 0

12

L1 - HDLC, L2 - X.75SLP and data compression autodetection in accordance with V.42bis, L3 - transparent

AT +iS<Format>

Format

Service Indicator/Additional Service Indicator

Number

Sets the Service Indicator to the provided value. The Additional Service Indicator is set to zero. The number should be in the range 1 ... 7.

Number1/Number2

Number 1: Service Indicator. It should be in the range of 1 ... 7. Number 2: Additional Service Indicator. It should be in the range of 0 ... 255. [f]

At +iT<n>

ISDN trace options. Reserved for use by Dialogic. <n> ranges from 0 to 255.

AT +iH[<n>]

<n>

Erases/sets slow application workarounds.

0

Erases workarounds. Equivalent to AT command: AT+IW=0+IX=0+IY=0+iZ0

1

Sets workarounds. Equivalent to AT command: AT+IW=1+IX=81+IY=8+iZ80

AT +iW<n>

Defers receive notifications to <n> bytes/millisecond. <n> should be in the range of 0 ... 64000.

AT +iX<n>

Respects read block size and defers receive notifications. <n> should be in the range of 0 ... 64000.

AT +iY<n>

Defers transmission to <n> bytes/millisecond. <n> should be in the range of 0 ... 8.

AT +iZ<n>

Splits large frames into <n> byte segments. <n> should be in the range of 0 ... 2048.

AT +iU=<BC>|<BC/LLC>

Sometimes the Service Indicator and Additional Service Indicator are not flexible enough to indicate the necessary information in bearer capabilities (BC) and low-layer compatibility (LLC) that the user wants to provide for an outgoing call. In this case, the user can set these values directly. For example, to indicate a V.110 call with 38400 bps and the appropriate flow control option, the user can enter the command: AT+IU=<8890214d00bb> to specify the BC value. The provided BC and LLC values are used without any verification (except max. length of information element) to create the SETUP message sent over the D-channel. This allows the use of proprietary BC/LLC values not yet covered by standards. See Call parameter (BC/LLC) selection for details.

AT +iI

Reserved.

AT +iE=<Mode>

Mode

Global TTY mode. See Incoming RAS call type autodetection for details.

AT&F16+IE=piafs32k

China 32K PIAFS link

AT&F17+IE=piafs64k

China 64K PIAFS link

AT&F18+IE=piafs

China variable speed PIAFS link

AT+IE=none

Resets the tty interfaces to "default" mode (i.e. signaling information will be used to determine the call type)

AT +iQ=<binding>

String

Binding. See TTY "channel pool" mode for details.

oX

Bind TTY to board X for outgoing calls

iX

Bind TTY to board X for incoming calls

aX

Bind TTY to board X for the calls

o0

Erase TTY binding for outgoing calls

i0

Erase TTY binding for incoming calls

a0

Erase TTY bindings for incoming and outgoing calls

?

Display current bindings

AT +iK=<binding>

String

Binding. See TTY "channel pool" mode for details.

oY

Bind TTY to line Y for outgoing calls

iY

Bind TTY to line Y for incoming calls

aY

Bind TTY to line Y for the calls

o0

Erase TTY binding for outgoing calls

i0

Erase TTY binding for incoming calls

a0

Erase TTY bindings for incoming and outgoing calls

?

Display current bindings

Note: This command must be used in conjunction with the AT+iQ command to first set the controller number that the tty interface is bound to

AT +MF=<data bits><parity>,<top bits>

Data bits: 8,7,5. Parity: N (none), O (odd), E (even), S (space), M (mark). Stop bits: 1, 2. The transmission rate is derived from the currently selected Rx/Tx transmission speed (+MS command). Example: AT+MF=8,N,1 - select 8 data bits, no parity and one stop bit.

AT +MF?

Returns currently selected framing.

AT +MF=?

Returns list of supported parameters.

AT +MS?

Modulation Selection Query. The response to the query has the following format: AT +MS: <mod>,<auto>,<min>,<max>,<min_rx>,<max_rx>.

AT +MS=[<mod>][,[<auto>][,[<min>][,[<max>][,[<min_rx>][,[<max_rx>]]]]]]

Modulation Selection Set. Modulation: B103 (300 bps), B212A (1200 bps), V21 (300 bps), V22 (1200 bps), V22B (1200 - 2400 bps), V22F (1200 bps Dialogic^® Diva^® Fast Setup), V22BF (1200 - 2400 bps Diva Fast Setup), V23C (Tx:75 bps/Rx:1200 bps outgoing call, Tx:1200 bps/Rx:75 bps incoming call), V23HDX, V23HDXON (1200 bps half duplex for SMS over PSTN, off/on hook standard), V32 (4800 - 9600 bps), V32B, (4800 - 14400 bps), V34 (2400 - 33600 bps), V90 (28000 - 56000 bps download client <- server, 28000 - 32000 bps upload client -> server), V90a (28000 - 56000 bps upload client -> server, 28000 - 32000 bps download client <- server). Auto: 0 - use only the specified modulation, 1 - try other modulations with lower data rates if the specified modulation cannot be used. min: Minimum transmit data rate. max: Maximum transmit data rate. min_rx: Minimum receive data rate. max_rx: Maximum receive data rate. Only V90 modulation has different transmit/receive rates. Rate = 0 means no minimum or maximum limitation. Valid Rate Values (in bps): 75, 300, 600, 1200, 2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400, 28000, 28800, 29333, 30667, 31200, 32000, 33600, 33400, 34667, 36000, 37333, 38000, 38667, 40000, 41333, 42000, 42667, 44000, 45333, 46000, 46667, 48000, 49333, 50000, 50667, 52000, 53333, 54000, 54667, 56000, 0