Wireless communication devices communicate with other devices and systems by connecting to wireless communication systems. Typically a wireless device will use a cellular voice protocol, such as 1x Code Division Multiple Access (CDMA) or the Global System for Mobile communications (GSM). Wireless devices communicating using these protocols are able to transfer between access node without losing connectivity for an in progress call. This transfer process is commonly referred to as handing off between access nodes.
Newer wireless protocols, sometimes referred to as third or fourth generation wireless protocols, are more packet centric wireless protocols. Voice calls with a wireless device over a third or fourth generation protocol may use a packet based protocol, such as Voice over Internet Protocol (VoIP). Transferring an in progress call from a non-packet based connection to a packet based connection may be difficult. The transfer difficulties may cause the call to be dropped due to the difference in access protocols.