The voice behind the Gadgetron HelpDesk was the HelpDesk girl, voiced by Mona Marshall. She had a low, slow robotic voice, yet soft to the ear. Ratchet expecting her to be attractive, the finding her to be a robot, Clank then took interest in her.
Ratchet (and presumably Clank) are clients number 91802. This is said during Up Your Arsenal and Tools of Destruction.
Ratchet has a communicator attatched to his glove.There he can summon Gadgetron's help, or navigational help.