AT Commands Reference Manual - wireless netcontrol GmbH

Improved OEM Features
Another high volume data service application is FTP (File Transfer protocol), although data is
sent in the “Background”. H24 supports embedded internal IP stack.
The HSDPA is used for application that utilize heavy downlink data rate such as YouTube,
Multimedia application, FOTA and more.
Simultaneous Voice and Packet Data
H24, as a 3.5G device, supports simultaneous services. This means that between Network and
H24 there is a pipe that is composed of multi channels that forward data and/or voice at the same
time.
This way H24 is able to simultaneously forward a file; receive a voice call, handle SMS and also
browse the internet. Performance is derived from throughputs provided by the network.
USB 2.0 Device
The main connection channel between H24 and Host is done utilizing USB 2.0 physical interface.
H24, by its nature, is the USB device and the Terminal is the USB host.
At startup, H24 is enumerated with terminal as a Motorola device. It also supports mass storage
functionality.
H24 supports multi-channeling over USB for AT commands and Data connectivity. More
information can be found in the “connectivity” section.
USB 2.0, called High Speed USB, supports bandwidth up to 480 Mbit/s baud-rate. Also see‘H24
USB Compositions” on page B-1. For power management detailed documentation, contact H24
customer care team. See “Contact Us” .
SIM/USIM
H24 supports USIM, In addition, it supports also SIM for GSM 2G networks.
TCP/UDP IP Connection
Refer to “TCP/UDP IP” on page 3-314.
Audio
Overview
The audio (digital and analog) feature in the H24 module involves three main issues: path
(routing of the audio through the different devices), gain and other calibrations. For more
information, refer to “Audio” on page 3-194.
1-8 H24 - AT Commands Reference Manual April 15, 2010