"I have been here for these many weeks, hoping that my cousins would come for me. Hoping that some survived. Finally I risked sending out a mirrorwave call. It works by... I am not supposed to explain Andalite technology. My brother will... He would have been angry with me."
Ax to the Animorphs[src]

Mirrorwave calling is a method of long-distance thought-speak. It was used by Ax in The Message to call for help, with the plea being heard by Tobias, Cassie and Esplin 9466, through his host body Alloran-Semitur-Corrass.

Andalite technology Dome Ship | Escafil Device | Hirac delest | Mirrorwave call | Z-space transponder | Morphing | Mag-Hover Truck | Quantum Virus | Shredder | Gleet Bio-Filter | Prion Virus
Yeerk Technology Anti-morphing ray | Dracon beam | Gleet Bio-Filter | Kandrona | Kandrona Rays | Nova-class Empire Ship | Pool ship | Blade ship | Mag-Lev Train | Hunter Robot | Yeerk Pool | Bug fighter
Ketran Technology Explorer | Time Matrix | Mapping Crystal Quadrant 3 | Uninet | Adge
Other Dropshaft | Ixcila (Arn) | Pemalite crystal | Pemalite ship | Skrit Na Saucer | Hawjabran Colony Ship | Hawjabran Freighter