·Online Command State
When first powered on, the modem is in the Command State where it is able to accept
industry-standard AT commands. When instructed to dial out or to answer a data call, the
phone is in the Online State. The
"Quick Reference Guide",
section 14.0 has more
information on how to enter these operational modes
1.3 Operating States
In this manual, reference is made to
Command State
,
Online Command State
and
Online
Data State
, these states are defined as follows:
Command State:
In Command State, the modem is not communicating with a remote station, and is ready
to accept v.250 commands. Data from the local DTE are treated as command lines and
processed by the modem; with responses echoing back to the local DTE. The modem
enters this state upon power-up, and when a call is disconnected.
Online Command State:
In Online Command State, the modem is communicating with a remote station, but treats
data from the local DTE as command lines and sends responses back to the local DTE.
Data received from the remote station during Online Command State is buffered in the
modem until Online Data State is once again entered (by a command from the DTE).
Data previously transmitted by the local DTE and buffered in the modem will be sent
from the buffer to the remote station during Online Command State. Online Command
State may be entered from Online Data state through the use of the "
+++
" escape
sequence or via change of DTR state as configured by the "
&D
" command.
Online Data State:
In Online Data State, the modem is communicating with a remote station. Data signals
from the DTE are treated as data and transmitted to the remote station. Data received
from the remote station are delivered to the DTE. Data and control signals are monitored
by the modem to detect events such as loss of the remote connection and DTE requests
for disconnection or switching to Online Command State. Online Data State is entered by
successful completion of a command to originate or answer a call, by automatically
answering a call, by a DTE command to return to Online Data state from Online
Command state or in response to the DTR signal as configured by the "
&D
" command.
1.4 The Types Of Data Calls
This chapter describes some of the features and capabilities of the modem. Section 2.0
explains how to set up and test your modem using Hyperterminal. Understanding these
types of data calls may help you to integrate the module with other systems as well.
The module can make several types of data calls:
·Async Data:
Asynchronous Mode:
Transfers raw data between two computers.
·1x Packet Data:
QuickNet Connect (QNC):
QNC is an ISP option which allows access to the internet.
Verizon
Dynamic Mobile IP Key Update
(DMU):
