Toronto-based Talkster Inc. has unveiled a unique mobile phone-to-IM calling service as a part of their new VoIP network. Talkster is designed to allow you to place calls from mobile handsets to any mobile or traditional phones.

You can place voice calls to users that do not have unique phone numbers, such as your IM contacts. Through Talkster's network, you can call your IM contacts on MSN Messenger, Google Talk or Gizmo Project if the voice options are enabled on the contact's IM client.

Using Talkster's network, you can call your IM contacts on MSN Messenger, Google Talk or Gizmo Project.

Placing the call from your mobile phone is a is a two-step process that is handled by Talkster's Network. Once you have chosen where to call (e.g. another telephone number or IM contact), Talkster's VoIP network is signaled to initiate the call.

Talkster will then trigger your phone to call a local access gateway, or use a process where you get a phone call back for the connection. This step connects the call over the cellular voice network, and the person you are calling will receive the call on their phone. If you're placing a voice calling to an IM contact, their messenger client will ring for notification of an incoming call. 

The cost of international calls made through Talkster to other phones are based on a per minute rate which is charged depending on the location. Talkster has launched the mobile phone-to-IM calling service as a free beta service, and while they do not charge a fee for the connection between their gateway and your IM contact, some users may incur a charge by their own mobile provider to connect to Talkster's local access number.

The mobile phone-to-IM calling beta service is available for a wide range of mobile phones and smartphones and does not require any additional software to be installed on your phone or PC to use.