Talkonaut

Talkonaut™ is free mobile calling, VoIP enabled, Google Talk™ like application for your mobile phone. Talkonaut is available for three different mobile platforms: Symbian S60, Windows Mobile 5/6 and J2ME with MIDP-2.0.

Talkonaut™ supports Jabber, Google Talk, ICQ, MSN, AIM and Yahoo networks both for chatting and voice calling.
Talkonaut™ allows to make free VoIP over GPRS/EDGE calls, as well as calls over 3G, or WIFI.

Talkonaut

PortSIP

PortSIP CE is the newest free softphone application from PortSIP, it's built base on PortSIP VoIP SDK, allowing users to enjoy multimedia communications in a dynamic way.

PortSIP CE works seamlessly with your internet connection – you can chat away with free calls and never worry about cost, time or distance. It including great features to help you stay in touch with friends, family and co-workers, share your thoughts and views and find the information you need. You can use it on your PDA

PortSIP CE is a VOIP softphone that running on Windows Mobile 5.0/6.0, allows you to speak with any other softphone , any stand-alone IP-phone, or using Internet Telephony Service Provider (ITSP) with any traditional wired or mobile phone. It supports SIP and is fully inter-operable with most major VOIP vendors and ITSPs.

Standard Features
Support platforms: Windows Mobile 5/6
Support Device Screen: QVGA(320*240),VGA(640*480)
Support servers: Cisco CallManager, Open SER, SER, Asterisk, Portaone, Radvision, Nortel, Rainbow, Avaya and other SIP Platforms.

Switch between earpiece and load-speaker(Does no support some devices, likes Samsung I708)
Audio call: G.711 aLaw/uLaw, GSM, G723.1, G729.
Call transfer: Blind transfer
Call hold, mute speaker, mute microphone.
Audio record: record audio as wave file.
DTMF support: Send DTMF tone(RFC2833 and SIP INFO method), detect DTMF tone(RFC2833 and SIP INFO method).
Silent Ringtone
Acoustic Echo Cancellation
Automatic gain control
Comfort Noise Generation
Voice Activity Detector
STUN support
Outbound proxy server support
Jitter buffer
Freeware

Attention!
Having PortSIP installed is not enough to talk except over your local network. You have to obtain an account with any ITSP like Vonage or SipIptel.org, or install your own VoIP server.

PortSIP

AudioRoute

This tool that can be used to route the audio from the earpiece speaker to the backspeaker and vice versa.

A good addon for VoIP utilities.

Features:
Routes the audio output to earpiece of backspeaker
VoIP compatible
Easy to use User Interface
Command line support
Uses Teksoft's DynRIL library

AudioRoute

VOIP

Earpiece fix for OMAP phones

If you are trying to use VOIP on many phones you will notice that the audio comes out of the rear speaker. If your phone is based on OMAP and uses the TWL3016 baseband process (e.g. excalibur, herald, Pheobus) then I have a fix for you. This fix should work with Skype too.

It is a service that overrides settings inside the baseband processor by watching the registry value for the Speaker setting:

HKLM\System\State\Hardware\
Speaker

When it sees a change in the value of this key it will change the audio routing. This key is changed whenever the Speaker option is changed in the phone canvas.

Currently it will only take action when there is a change! This is important as the routing gets reset whenever the phone mode changes, whenever the media player runs and so on.

It also monitors a system wide named events "AUDIO_SPKON" and "AUDIO_SPKOFF". Kick either event and it will see it and make the change.

If anyone wants to write a home screen plugin then you simply need to add:

HANDLE hSpkOn = CreateEvent( NULL,0,0,L"AUDIO_SPKON")
...
SetEvent( hSpkOn );
...

CAB file automatically starts the service.
- The Source includes a Solution that builds all the pieces. Open with VS2005. You need the WM6 SDKs
- The CAB file install 2 exes in Program Files\AudioRouting. SpkOn and SpkOff i.e. Turn on and off the speaker.

TheSilverRing of XDA-Developers

VOIP in WM6.1

This cab allows you to use VOIP under Windows Mobile 6.1

install in your phone.

Then, go to Today menu, Programs, Sip Config Tool, input your provider settings and save. Then, go to Today menu, Settings, Today, Items and check "Internet Calling". Then, go to Today menu, Settings, Phone, Internet, and select "Only if cellular is not available" or "whenever available" according to your needs.

Softreset your phone, and after that, connect to a wifi network. You will notice that in your Today screen, the VOIP line has changed from "No service" to "Available". If you want to make a VOIP call, click on this line, and will change to "Selected". All the calls you make from now on will be done using your VOIP line.

destr0 of XDA-Developers

VoipSMS

For sending textmessages to a foreign country.

Instructions
You can only use this program if you've a VoipBuster, VoipRaider or VoipStunt account. (or similar to one of those)
Before using it, make sure that you've set the settings.

URL:
For VoipBuster: https://myaccount.voipbuster.com/clx/sendsms.php
For VoipRaider: https://myaccount.voipraider.com/clx/sendsms.php
For VoipStunt: https://myaccount.voipstunt.com/clx/sendsms.php

Username: your VoipBuster username
Password: your VoipBuster password
From: your own phonenumber in international format without spaces. (for example: +31123456789, +31 for The Netherlands)

Rhapsody of XDA-Developers

Fring

fring™, a free mobile VoIP software, allows you to talk & IM via your handset's internet connection to other mobile phones and PC-based services such as Skype®, Google Talk™, MSN® Messenger, SIP and Twitter, at no extra cost.


fring™ is a free mobile VoIP software that lets you talk and live chat (IM) using your handset's Internet connection instead of costly mobile airtime (GSM) minutes. fring enables free mobile calls over Wi-Fi Internet access or your GPRS, EDGE or 3G Internet data plan.

FRING.COM

SJPhone

SJphone® is a VOIP softphone that allows you to speak with any other softphone running on a PC/PDA, any stand-alone IP-phone, or using Internet Telephony Service Provider (ITSP) with any traditional wired or mobile phone. It supports both SIP and H.323 standards and is fully inter-operable with most major VOIP vendors and ITSPs.

SJ Labs