1. A method for controlling a document service request at a mobile computing device, comprising: initiating, at the mobile computing device, the document service request that includes a first parameter identifying a document accessible to a document server; obtaining, at the mobile computing device, device information identifying a type of output device available over one of two communications channels; adding, at the mobile computing device, the device information as a second parameter to the document service request; transmitting, from the mobile computing device, the parameters of the document service request to the document server over one of the two communications channels; and controlling, at the mobile computing device, a connection between the document server and the output device to transmit there between the document in a format suitable for the output device; the mobile computing device establishing the connection with the document server over a first of the two communications channels and with the output device over a second of the two communications channels.