Product Overview; Features - Motorola C380 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 C380 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 C380 is a quad band
phone that allows roaming within the GSM 850 MHz, DCS 1800 MHz, and PCS
1900 MHz bands, or GSM 900, DCS 1800 MHz and PCS 1900 MHz bands depending
on how the unit is flexed.
These 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. 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 650 mAh Lithium Ion (Li Ion) battery provides 180 to 250
minutes of talk time with 92 to 150 hours of standby time
and 1.8V mini subscriber identity module (SIM) cards which fit into the SIM holder
under the rear housing cover. These telephones feature a 128 x 128 pixel 65K Color
Super-twist Nematic (CSTN) display and an internal antenna.
C380 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
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May 14, 2004
Product Overview
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. The phone accepts 3V
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