Velocity Edge GX440 Specifications download pdf (Page 18)

MP 700 Series GPS AT Command Reference

Note: A transition to command

state from data state does not

require that the session be

closed. This means that DCD will

remain asserted while the

modem is in command state,

online condition.

Offline Disconnected from any remote terminal or network

(on-hook). While in offline condition, the modem can only be

in command state (without an airlink).

The following tables show the possible combinations of

modes, states, and conditions:

Table 2-1: Functional combinations of modem state

and mode

Command State Data State

CSD Mode Yes Yes

GPRS Mode Yes Yes

Voice Mode Yes No

Table 2-2: Functional combinations of modem state

and condition

Command State Data State

Online Condition Yes Yes

Offline Condition Yes No

State Transitions

The auto connect feature (see !MPPADSETUP on page 54) deter-

mines what state is established when the modem is powered:

• If autoconnect is enabled, on start-up the modem is in data

state. (A PAD session is established, but not necessarily an

Internet connection.)

• If autoconnect is disabled, on start-up the modem is in

command state.

Command to data state

The modem changes from command to data state when a

session is opened either by dialing a connection, or by

answering a data call. When a session opens, the modem

issues the

CONNECT message and, depending on the DCD

setting (see page 58), asserts the DCD control signal.

Data to command state

The modem changes from data to command state when:

• The DTR de-asserts (depending on settings made, &D1 or

&D2).

• The modem is reset or power-cycled (if autoconnect is

disabled).

16 2130309

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 117 118

Comments to this Manuals

No comments

Velocity Edge GX440 Specifications Page 18

Comments to this Manuals

Related products and manuals for PC/workstation barebones Velocity Edge GX440