Allowing a wireless network application to execute, as during development and testing, as if connected to a wireless network using wireless modems without requiring physical access to or presence of a wireless network or devices for accessing the same, by simulating a wireless modem or device. The simulation of commands for a type of wireless communication device with a predefined attention command set may entail receiving, at a wireless communication device simulator, attention commands of the attention command set. For received attention commands, responses may be automatically determined or selected in response to receiving the command without using a wireless communication device to determine the appropriate response. And, the determined attention command responses may be provided from the wireless communication device simulator.