Nokia Asha software platform 1.1 adds voice over IP (VoIP) capabilities for app developers. This webinar shows you how to add VoIP services to your Nokia Asha apps and how to set up a wireless local area network (WLAN) with Nokia Asha SDK 1.1 for testing your apps. We cover how to work with the VoIP API, how to simulate a WLAN for testing, and how to develop full apps that use VoIP. The webinar is presented by Dalbir Dahiya, engineering manager with Nokia. He begins with an overview of how to implement VoIP in apps for users of Nokia Asha phones, and then covers all the information you need to develop with the VoIP API. He also demonstrates sample apps that you can download and modify to incorporate into your own apps. Find out more about: * the VoIP API in the Java Developers Library: http://developer.nokia.com/Resources/Library/Java/#!developers-guides/voip.html * the Nokia Asha SDK: http://developer.nokia.com/Develop/asha/java/tools.xhtml * getting started with the Nokia IDE: http://developer.nokia.com/Develop/asha/java/start/nokia_ide/ * getting started with NetBeans: http://developer.nokia.com/Develop/asha/java/start/netbeans/ * all the new APIs in Nokia Asha software platform 1.1: http://developer.nokia.com/Resources/Library/Java/#!whats-new/java-runtime-for-nokia-asha-software-platform-110.html Check out the current webinar schedule here: http://www.developer.nokia.com/webinars and https://developer.nokia.com/Develop/asha/learning/

1. VOICE OVER IP USING
NOKIA ASHA SOFTWARE PLATFORM 1.1 (BETA)
Dalbir S Dahiya
Engineering Manager
Nokia Asha Developer Platform
Dalbir.dahiya@nokia.com

2. CONTENTS
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Introduction to VOIP
VOIP Experience
Native VOIP
VOIP App using Java API
• Implementation Steps
• Basic VOIP APIs
• Call Setup Coding details
• Configuration
VOIP Example
Additional Information

3. NOKIA ASHA VOIP INTRODUCTION
Voice over IP (VOIP) uses the Internet Protocol (IP) to transmit voice as
packets over an IP network. Nokia Asha Platform uses Session Initiation
Protocol (SIP) protocol.
VOIP platform details:
• Protocols: SIP, RTP/RTCP, STUN
• Supports WiFi internet access
• Call features: Mobile Originating and Mobile
Terminating calls
• Hold/Retrieve
• Multi call support (one active, one held, one
waiting)
• Call forwarding
• DTMF support

4. NOKIA ASHA VOIP INTRODUCTION
VOIP platform capabilities:
• One media stream (audio) only is supported
• Speech codecs: AMR-WB/NB, G.711 u-law/a-law, G.729, G.726,
GSM-EFR/FR.
• Echo cancelation & Dynamic jitter buffer
• Secure call support (SIP TLS + SRTP)
• Network Aaddress Translation /Firewall travelsal: STUN support,
NAT keep alive, symmetric signaling/media
• Quality of Service: Media/Signalling QoS marking with
Differentiated Service Fields, Bandwidth negotiation, RTP CP
Extended Report VoIP metrics
• IPv4 and IPv6 in signaling.
• E.164 numbers

5. NOKIA ASHA VOIP INTRODUCTION
VOIP platform limitations:
• Multicast streams are not supported.
• Changing the port number/media type/transport
during a session is not supported in the
• Session establishment through two proxies.
• Successful session with proxy failure
• Session through a SIP ALG.
• Offer & Answer: A port number of zero is used to
reject offered media for MT sessions.

6. VOIP EXPERIENCE
VoIP is available both as natively integrated solution as well as via
Java API. Both utilise the same platform VoIP implementation
Native VoIP
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Setting up via Accounts
Native Call UI experience
Native Phonebook integration
Native notifications integration
Native dialer integration
Native logs integration
Native fastlane integration
Java Application
• Seamless SIP setting
configuration
• Full control on the call UI
• Custom ringing tones
• All in-call features available
• Support for multiple calls

7. SETTING UP NATIVE VOIP CONFIGURATION
Accounts is a Nokia hosted FREE service that
can be accessed directly from the phone UI
over GPRS/WLAN connection.
From the Accounts end users can setup the
wanted VoIP providers to their handsets or
create their own manual VoIP settings.
Companies can host OTA SMS based
configuration systems which are OMA
CP compliant to their employes or
customers to setup VoIP to Asha
handset.
Small companies or individual users
can create OMA CP compliant VoIP
configuration documents and
configure them to the phone over
Bluetooth OBEX Push.

8. NATIVE VOIP SIMULATION SETUP
Asterisk Server Version
OS Version
Server IP Address
Total SIP Account Created
Usernames
Password
Extension Number’s
Emulator 11000,
SIP AC-1001/ext-6001
Emulator 11002,
SIP AC-1002/ext-6002
1.8.13.1
Ubuntu 13.04
192.168.1.100
40
1001-1040
password
6001-6040

9. NATIVE VOIP DEMO

10. VOIP APP USING JAVA API

11. VOIP IMPLEMENTATION ON NOKIA ASHA
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Nokia Asha software platform 1.1 provides the actual
VoIP client engine implementation and the VoIP API
for 3rd party applications
Platform is taking care most of the actual VoIP
functionality, but it needs also the also the specific
VoIP settings from the given application and SIP
account.
The VoIP settings of each VoIP MIDlets are given in a
form of an XML file to the VoIP API.
VoIP settings, such as network, audio codec settings,
etc. can be left to their default values. Otherwise,
developer should use appropriate configuration for
the SIP server in use.

12. VOIP PACKAGE OVERVIEW
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On Nokia Asha Platform 1.1, there is new Java package available:
• com.nokia.mid.voip
Principal classes in the package are as following:
• VoipManager
• VoipStates
• VoipCauses
Principal interfaces in the package are as following:
• VoipSettings
• VoipSettingsStateListener
• VoipAudioCall
• VoipSettingsStateListener
• VoipMTCallListener

13. MAKING VOIP CALL STEP I
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In order to retrieve the VoIP settings and register with the VoiP server, read the
xml file from the resource/jar file and represent it as a String:
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There is no build-in method for this so the developer needs to write his own. For
example a custom made function for reading the xml file:

14. MAKING VOIP CALL STEP II
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Create a VoipSettings instance that is used for reading the VoIP settings from a String. When
the settings are written (with the build-in writeVoipSettings method), the client attempts to
use the settings as they have been provided by the developer to connect and register with
the VoIP server.
A VoipSettingsStateUpdated listener is used for listening for the status of the registration
attempt (whether the client is online, offline or a connection or registration error occurred):

15. MAKING VOIP CALL STEP III
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A VoipAudioCall instance and a VoipAudioCallStateListener are used to establish a call and
listen for any call updates (call establishment, call termination, connection error). The
startCall method receives as argument a boolean that allows the calling MIDlet to send its
caller id to the remote party:

16. RECIEVING VOIP CALL I
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When the MIDlet is running, A VoipMTCallListener is used for listening for any incoming calls:

17. RECEIVING CALL WHEN APP IS CLOSED
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When the MIDlet is not running, the getAppProperty method is used from the instance that
extends the MIDlet class in order to retrieve the invocation reason (“arg-0”) and the caller id
(“arg-1”). The developers needs to control if the invocation reason is a valid incoming call
and then handle the incoming call as follows:

18. IMPLEMENTING VOIP FUNCTIONALITY
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After obtaining a reference to a VoIP
Audio Call using VoipManager,
applications can use method
startCall() to initiate and outbound
call or to answer an incoming call

19. CONFIGURATION XML EXAMPLE
Java midlet config xml file can be
obtain from Asha SDK 1.1 example
application.
For TLS support, one need to do the
following changes to xml file:
1.
Turning SIPoTLS ON or OFF - to turn on
SIPoTLS following need to be changed
SECURECALLPREF <0,1,2>
1.if SIPoTLS and RTP used
2.if SIPoTLS and SRTP used
2. all sip: prefix need to be sips:
APROTOCOL <TCP/UDP)
PORTNBR as 5061

20. THE VOIP EXAMPLE
This example shows how to create a simple VoIP client MIDlet for making
internet calls over SIP protocol. It demonstrates the usage the VoIP API on Nokia
Asha software platform 1.1 and how to handle VoIP calls.
Pre-requisites:
1. Nokia IDE for Java ME with Java ME support
2. Nokia Asha SDK 1.1 - Beta
3. Two emulator instances
4. SIP Server running i.e. Asterisk SIP server at 192.168.1.100
5. Two SIP accounts i.e. 1001 with ext. 6001 & 1002 with ext. 6002

21. THE VOIP EXAMPLE DEMO

22. MORE INFORMATION
Overview
- http://developer.nokia.com/Develop/asha/java/start/
Downloads
- http://developer.nokia.com/Develop/asha/java/tools.xhtml
- http://projects.developer.nokia.com/LWUIT_for_Series_40
Guides
- Nokia Asha Design Guide: http://developer.nokia.com/Resources/Library/Asha_UI/
- Porting Guide: http://developer.nokia.com/Resources/Library/Porting_to_Nokia_Asha/
- Documentation: http://developer.nokia.com/Develop/asha/java/resources/docs/
- Training Videos: http://developer.nokia.com/Develop/asha/learning.xhtml
- Code Examples: http://developer.nokia.com/Develop/asha/java/resources/code/

23. THANK YOU.
QUESTIONS?
For more information:
https://developer.nokia.com/Develop/asha/learning.xhtml

24. BACKUP