Wireless communication device operable on different types of communication networks

A method of establishing data sessions between a wireless communication device (WCD) and both of a first network supporting voice and data services and a second network supporting packet data services, comprising:

• a. acquiring the first network;
• b. monitoring the first network for paging messages;
• c. establishing a data session on the first network;
• d. detecting a request for a packet data service (PDS);
• e. handing-off the data session from the first network to the second network in response to detecting the PDS request, to thereby establish the data session on the second network;
• f. transitioning the WCD to an active state on the second network to send or receive a data packet in response to receiving a request to send or receive the data packet.
• g. detecting a dormancy of the data session corresponding to a predetermined period of time that data is not being exchanged between the WCD and the second network;
• h. transitioning the WCD to a dormant state and initiating a Dormancy time-out period when the dormancy is detected in step (g);
• and
• i. monitoring both the first network and the second network for paging messages while the WCD is in the dormant state.

A WCD capable of establishing data sessions on both a first network supporting voice and data services and a second network supporting packet data services, comprising:

• means for establishing a data session on the second network;
• means for detecting a dormancy of the data session corresponding to a predetermined period of time that data is not being exchanged between the WCD and the second network;
• a Dormancy Timer;
• means for initiating the Dormancy Timer in response to detecting the dormancy;
• means for monitoring both a paging channel of the first network and a paging channel of the second network in response to detecting the dormancy;
• and
• means, responsive to the Dormancy Timer, for monitoring only the first network paging channel when the Dormancy Timer expires.

A computer program product comprising a computer usable medium having control logic stored therein for causing a processor of a wireless communication device (WCD) to control the WCD, such that the WCD is capable of establishing data sessions on both a first network supporting voice and data services and a second network supporting packet data services, the control logic comprising:

• first computer readable program code means for causing the processor to establish a data session on the second network;
• second computer readable program code means for causing the processor to detect a dormancy of the data session corresponding to a predetermined period of time that data is not being exchanged between the WCD and the second network;
• third computer readable program code means for causing the processor to initiate a Dormancy time-out period when the dormancy is detected;
• fourth computer readable program code means for causing the processor to monitor both a paging channel of the first network and a paging channel of the second network when the dormancy is detected;
• and
• fifth computer readable program code means for causing the processor to monitor only the first network paging channel when the Dormancy time-out period expires.