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Level III Service Manual Product Overview
Product Overview
Motorola A009 communicators use triband technology that allows messaging and
cellular telephony while roaming across the global system for mobile communica-
tions (GSM) 900, 1800, and 1900 MHz ranges. The communicator also provides
personal digital assistant (PDA) capability that features a number of built-in
applications, programmability to support third-party applications, and a high-
resolution color display.
The A009 communicator supports general packet radio service (GPRS) in addition
to traditional circuit switched and short message service (SMS) transport technol-
ogies. GPRS, where available, provides substantial increases in mobile data com-
munications performance and the efficient use of radio spectrum. Data
transmission rates for GSM networks can potentially increase from the current rate
of 9.6 kbps up to a theoretical maximum of 171.2 kbps. An increased data rate is
by no means the only benefit provided by GPRS. A key advantage is the provision
of a permanent virtual connection to the network. This "always on" connection is
possible because GPRS uses packet data transfer so that, for example, email can
be downloaded in "background mode." There is no need for the user to re-connect
before requesting a service, eliminating connection set-up delays and adding con-
venience and immediacy to data services access. The "virtual" nature of this
connection means that network resources are not consumed during periods when
a user is not actually sending or receiving data.
Features
A009 communicators use the most advanced, self-contained, sealed, custom
integrated circuits (ICs) to perform the complex functions required for GSM com-
munication. Aside from the space and weight advantage, microcircuits enhance
basic reliability, simplify maintenance, and provide a wide variety of operational
functions.
The following features are available in A009 communicators.
• Lower voltage technology provides increased standby and talk times
• Tri-band (GSM900/digital cellular system (DCS)1800/personal communica-
tions services (PCS)1900) capability
• Tri-coder/decoder (CODEC) that allows Full Rate, Half Rate, and Enhanced
Full Rate modes of transmission
• Enhanced QWERTY keyboard
• 1/8 video graphics array (VGA) (240 x 160) low-temperature poly-silicon (P-Si)
color display
• External headset
• VibraCall™ feature
• 3-pin RS232 connection
• Language support for prompts, SMS, and the phonebook
• Calling name presentation
• Display animation
• Call divert interrogation
• Supports GPRS, circuit switched, and SMS networks
• Concatenated SMS
• Wireless application protocol (WAP) 1.1 compliant
• Email transports include SMS email, post office protocol (POP)3, WAP email,
subscriber identity module (SIM) Toolkit, and EmailVClient™
• Supports Phase II unstructured supplementary services data (USSD)
Содержание A009
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