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<concept id="GUID-FA5A24BE-F4AF-5EC3-8969-6184A5A5BBFA" xml:lang="en"><title>Quick

Start</title><shortdesc>Cellular Baseband Services provides the framework that allows applications

to access the phone's telephony functions and allows handset manufacturers

to implement support for their telephony hardware. The components of the Cellular

Baseband Services support the standards defined for the GSM, GPRS, EDGE and

UMTS networks. Cellular Baseband Services works with the Communications Framework

to provide the telephony functions. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<section id="GUID-DBF1C87D-7360-54B7-8658-B6659BF77F06-GENID-1-10-1-5-1-1-5-1-3-1"><title>Getting started

with Cellular Baseband Services</title> <p>The Cellular Baseband Services

provide a rich network-independent framework and common interface to support

voice, messaging, and other telephony applications. The plug-ins to the framework

enable the handset manufacturers to extend the telephony functions. </p> <ul>

<li id="GUID-997697A7-5EDC-5223-818A-2F3B8B0D5720"><p>Use <xref href="GUID-462536AB-9687-575E-BBEA-2343208ABE1F.dita">Core

Telephony APIs</xref> to make voice, data and fax calls. </p> </li>

<li id="GUID-261B1B28-019D-538B-8468-1BDB38A0414C"><p>Use <xref href="GUID-BBF6E33F-2E9C-5BB1-8404-87289EC73BFF.dita">Multimode

Telephony APIs</xref> to access the specialised set of telephony functions

that are provided by the standards such as GSM and WCDMA. </p> </li>

<li id="GUID-DECE1E5D-642F-5B3C-961D-61BA93ACFFE6"><p>Use telephony <xref href="GUID-8F565241-149E-5AF7-972E-A06B6DDC1B9F.dita">Packet Data APIs</xref> to

access a phone network's packet data service. </p> </li>

<li id="GUID-03391EDB-46B1-54A6-B88D-C04DA6F5437E"><p>Use <xref href="GUID-E0DA7DE7-FD5A-5C1D-A53C-870966F00445.dita">SMS

Stack</xref> to send and receive SMS messages. </p> </li>

<li id="GUID-52F97557-A4D0-5190-8A22-39E3F0548DB5"><p>Use <xref href="GUID-F4A99C9F-21E8-57BF-9DE7-EA6C091C22E5.dita">Telephony

Server Plug-ins</xref> to communicate with baseband hardware. </p> </li>

<li id="GUID-49EEF5FE-69FB-5AFF-BE3B-348256B6D7F0"><p>Use <xref href="GUID-F2289115-B1F0-595D-AA1C-3E01F08911CA.dita">Hardware

Resource Manager</xref> to control and retrieve notifications from phone hardware

elements like light, vibra and battery. </p> </li>

<li id="GUID-0141B25D-22A0-5E23-B01C-132789B65976"><p>Use the telephony <xref href="GUID-68576352-5C05-5A09-8229-B84E03989A83.dita">SAT API</xref> to control

the SIM Application Toolkit (SAT) applications stored on the Subscriber Identity

Module (SIM). </p> </li>

<li id="GUID-7A998071-ED61-5423-A615-26E3479B5DC9"><p>Use telephony <xref href="GUID-F076FCEA-9A9E-5A1B-BF25-1959DA0A7B69.dita">Watchers</xref> to retrieve

status information about call and signal strength. </p> </li>

<li id="GUID-9DD07DF3-208B-56C9-8F54-4B86003FBDFC"><p>Use <xref href="GUID-7C197DC1-43CA-5146-B81D-36B685A1D0C9.dita">telephony

API for applications</xref> to get access to the common telephony functions

from applications through a simple interface. </p> </li>

</ul> </section>

<section id="GUID-0963B1A2-5550-43DA-9918-5D390CEF608C"><title>Architecture</title> <p>The

following diagram shows the Cellular Baseband Service collections, and the

components in each collection. </p> <fig id="GUID-496C0942-FE0C-5386-AB80-AA917CB8B55D">

<title>              Cellular Baseband Services: Collections            </title>

<image href="GUID-C4EFAB2B-5154-56E0-A4B7-234A5EABB796_d0e44936_href.png" placement="inline"/>

</fig> </section>

<section id="GUID-F1E897C4-5B8A-4830-BB2D-A7EFCA8CA03A"><title>Technologies </title> <ul>

<li id="GUID-7A49EAF6-C18D-5D3F-B553-C8262C469934"><p> <b>SIM Application

Toolkit (SAT)</b>  </p> <p>The telephony SAT API enables the handset manufacturers

to write SAT engines. SAT engines provide the functions for the SIM applications.

The telephony SAT API (ETelSat) supports both GSM and WCDMA networks. </p> </li>

<li id="GUID-60EB4180-67D4-5906-A5BA-9915BB19C319"><p> <b>Packet Data Service

with MBMS</b>  </p> <p>The telephony Packet Data API enables clients to use

the packet data services in the GPRS, EDGE and WCDMA networks. The telephony <xref href="GUID-8F565241-149E-5AF7-972E-A06B6DDC1B9F.dita">packet data</xref> API also

supports MBMS protocols in the packet data service. </p> </li>

<li id="GUID-415F2BEE-8884-5CD7-8BDA-A11AD32FD2A8"><p> <b>SMS</b>  </p> <p>The

telephony SMS stack enables clients to process SMS messages, and supports

different encoding methods. The telephony components provide the communication

functions to send and receive SMS messages. A higher level framework for users

to access SMS messages is provided by the <xref href="GUID-DA6BB8BB-DD92-57A7-AD1B-F9CFF8CD433F.dita">Mobile

Messaging</xref> module components. </p> </li>

<li id="GUID-F602430C-B5B2-515F-A717-841AE82E4C9A"><p> <b>High Speed Uplink

Packet Access</b>  </p> <p>The telephony multimode API and the telephony packet

data API implement the support for High Speed Uplink Packet Access. This protocol

is described in detail in <xref href="GUID-789214C3-FAE2-5588-A662-7F0DE17F84F9.dita">High

Speed Uplink Packet Access</xref>. </p> </li>

</ul> </section>

</conbody></concept>