Product Overview; Features - Motorola C350 Series Service Manual

Level 1 and 2 Service Manual

Product Overview

Features

1. All talk and standby times are approximate and depend on network configuration, signal strength, and features selected. Standby
times are quoted as a range from DRX=2 to DRX=9. Talk times are quoted as a range from DTX off to DTX on.
2. Network, subscription and SIM card or service provider dependent feature. Not available in all areas.
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Motorola C350 mobile telephones feature global system for mobile communications
(GSM) air interface, general packet radio service (GPRS) transport technology, and
wireless application protocol (WAP) Internet browser. The mobile telephone uses a
simplified icon and graphical-based user interface (UI) for easier operation, allow
short message service (SMS) text messaging, and include clock, alarm, datebook,
calculator, and caller profiling personal management tools. The C350 is a dual band
phone that allows roaming within the GSM 850,GSM 900 MHz and digital cellular
system (DCS) 1800 MHz and 1900 PCS bands.
C350 telephones support GPRS and SMS in addition to traditional circuit switched
transport technologies. GPRS, where available, provides substantial increases in
mobile data communications 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 convenience 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.
The telephones are made of polycarbonate plastic with a metal enclosure. The
display and speaker, as well as the 18-key keypad, transceiver printed circuit board
(PCB), microphone, charger and headphone connectors, and power button are
contained within the candy bar form-factor housing. The 600 mAh Lithium Ion (Li
Ion) battery provides more than 300 minutes of talk time with up to 300 hours of
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standby time . The phone accepts 3V mini subscriber identity module (SIM) cards
which fit into the SIM holder under the rear housing cover. These telephones feature
a 96 x 64 pixel 900 square millimeter high-resolution graphics display and an
internal antenna.
C350 telephones use advanced, self-contained, sealed, custom integrated circuits to
perform the complex functions required for GSM GPRS communication. Aside from
the space and weight advantage, microcircuits enhance basic reliability, simplify
maintenance, and provide a wide variety of operational functions.
Features available in this family of telephones include:
• Lower voltage technology that provides increased standby and talk times
• Extended GSM (EGSM) channels
• Tri-coder/decoder (CODEC) that allows full rate, half rate, and enhanced full
rate modes of transmission
• Supports SMS, concatenated SMS, and cell broadcast messages
• Supports GPRS, circuit switched, and SMS networks
• WAP 1.2.1 compliant
• Super enhanced sound engine
January 23, 2003
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