User's Manual

Table Of Contents
Module Software And Interface Modes
The iO1500R supports both circuit data over packet data and standard packet data
modes. DCE refers to the iDEN iO1500R Module. DTE refers to a computer or data
terminal equipment that is connected to the iO1500R Module. Below are the
descriptions for each of these data modes.
Circuit Switched Data
The iO1500R Module and the iDEN network interact to provide the DTE with a
circuit-switched data interface with the PSTN.
The iDEN infrastructure and data subscribers support circuit data based on
TIA/EIA-602 (commonly known as the “Hayes AT Command set” defines
messages and procedures that allow a DTE to control the operation of a DCE. The
DCE provides dialing, answering, and module services. The messages consists of
async ASCII (readable) characters and are sent “in band” between the DTE and
DCE (i.e. over the same interface used to transfer the data).
See the iDEN Mobile Subscriber DTE/DCE Interface for Data Services
68P81129E10-C for detailed AT command descriptions. See “How to use Hayes
Compatible Packet Data mode” for iDEN data module AT commands.
Packet Data
The iDEN Packet Data service provides wireless datagram-based networking on the
iDEN network. Based on the TCP/IP protocol suite, iDEN Packet Data provides a
mobile transport layer connecting the mobile node to the Internet.
The conventional method of using iDEN Packet Data (PD) service is via data terminal
equipment (DTE) containing a TCP/IP protocol stack.
A DTE connected to an iDEN data module will be able to use IP protocol to transfer
data to any IP capable device. For example it will be able to FTP a host computer and
browse an Internet site.
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