Abstract: Methods and systems are provided to connect telephone calls, such as international phone calls, using both the data network and telephone network of a mobile communication device such as a cellular phone. These systems initially route a call to the destination phone number through a non-international temporary phone number, thereby saving the cost of an international phone call on the mobile phone's service plan. An application on the mobile phone uses the data network to automatically request and receive the substitute termination number, and automatically sets up a call on the telephone network to the substitute termination number, which routes the call to the desired international telephone number. These systems reduce the cost of an international call, permit mobile phone users without international calling plans to make international calls, and automatically connect to an international number through a temporary non-international number using dual networks.

Abstract: Methods and systems are provided to connect telephone calls, such as international phone calls, using both the data network and telephone network of a mobile communication device such as a cellular phone. These systems initially route a call to the destination phone number through a non-international temporary phone number, thereby saving the cost of an international phone call on the mobile phone's service plan. An application on the mobile phone uses the data network to automatically request and receive the substitute termination number, and automatically sets up a call on the telephone network to the substitute termination number, which routes the call to the desired international telephone number. These systems reduce the cost of an international call, permit mobile phone users without international calling plans to make international calls, and automatically connect to an international number through a temporary non-international number using dual networks.

Abstract: Methods and systems are provided to connect telephone calls, such as international phone calls, using both the data network and telephone network of a mobile communication device such as a cellular phone. These systems initially route a call to the destination phone number through a non-international temporary phone number, thereby saving the cost of an international phone call on the mobile phone's service plan. An application on the mobile phone uses the data network to automatically request and receive the substitute termination number, and automatically sets up a call on the telephone network to the substitute termination number, which routes the call to the desired international telephone number. These systems reduce the cost of an international call, permit mobile phone users without international calling plans to make international calls, and automatically connect to an international number through a temporary non-international number using dual networks.

Abstract: Methods and systems are provided to connect telephone calls, such as international phone calls, using both the data network and telephone network of a mobile communication device such as a cellular phone. These systems initially route a call to the destination phone number through a non-international temporary phone number, thereby saving the cost of an international phone call on the mobile phone's service plan. An application on the mobile phone uses the data network to automatically request and receive the substitute termination number, and automatically sets up a call on the telephone network to the substitute termination number, which routes the call to the desired international telephone number. These systems reduce the cost of an international call, permit mobile phone users without international calling plans to make international calls, and automatically connect to an international number through a temporary non-international number using dual networks.

Abstract: A method and system are provided for managing voice and multimedia sessions over a network. The method includes initializing a SIP maintenance unit, performing tests on SIP proxies, adjusting a value of a counter based on the results of the tests, and managing the voice and multimedia sessions based on the results of the tests. The system includes SIP proxies, a SIP session initiator for selecting a SIP proxy to establish a media path, error counters, and a SIP maintenance unit for communicating between the components of the system and testing the SIP proxies. The system and method improve the performance of call routing and the average quality of media paths established for communicating multimedia data by testing the SIP proxies of a communication environment have varying characteristics.