Two-Way Communication with Telephones, Cellphones and Microphones
Two-way voice in Glaiden's Audio comes down to three craftable devices: the 
Telephone, the 
Cellphone, and the 
Microphone. All three are built around the same two components, a 
Microphone Capsule for input and a 
Speaker for output, which is why they share a family resemblance in both recipe and function.
The shared parts
Before you build any of the three, you need a Microphone Capsule and a Speaker. Every device in this guide uses both, so producing them in batches saves you a trip back to the crafting table. The 
Circuit Board is the other recurring ingredient, appearing in all three recipes as well.
Notice what is not shared: the Telephone and the Microphone both want 
Iron Ingot, but in different amounts, and the Cellphone takes a single Iron Ingot alongside a 
Glass Pane that neither of the other two uses. That Glass Pane is the clearest visual difference between the Cellphone and the Telephone on the crafting grid.
Crafting the Telephone
The Telephone is the heaviest iron investment of the three. Its shaped recipe combines one Microphone Capsule, four Iron Ingot, one Circuit Board, and one Speaker.
Four Iron Ingot is a real cost if you are equipping more than one base, so plan your iron around it. The payoff is a fixed communication point: a Telephone stays where you put it, which suits a room you return to rather than a device you carry.
Crafting the Cellphone
The Cellphone trades iron for glass. Its shaped recipe uses one Glass Pane, one Microphone Capsule, one Circuit Board, one Speaker, and one Iron Ingot.
Compared with the Telephone, you spend three fewer Iron Ingot and add a Glass Pane. If iron is tight and sand is not, the Cellphone is the cheaper build of the two. Build it when you want the same Microphone Capsule and Speaker pairing without committing four ingots to a single unit.
Crafting the Microphone
The Microphone is the input-focused device of the set. Its shaped recipe is one Microphone Capsule, one Circuit Board, and three Iron Ingot.
Three Iron Ingot sits between the Cellphone and the Telephone in cost, and unlike either of those it skips the Speaker entirely. If your goal is capturing voice rather than holding a conversation, the Microphone is the direct route, and it leaves your Speaker stock free for the devices that actually need one.
Choosing between them
Line the three recipes up and the decision is mostly about iron and about whether you need a Speaker in the finished item.
- Microphone: one Microphone Capsule, one Circuit Board, three Iron Ingot. No Speaker.
- Cellphone: one Glass Pane, one Microphone Capsule, one Circuit Board, one Speaker, one Iron Ingot.
- Telephone: one Microphone Capsule, four Iron Ingot, one Circuit Board, one Speaker.
If you are building a set rather than a single device, count your Microphone Capsule and Circuit Board needs first, since both appear in all three recipes and neither is optional. Speaker comes second, needed by the Telephone and the Cellphone but not the Microphone. Iron Ingot is the flexible resource: one for the Cellphone, three for the Microphone, four for the Telephone.
A practical build order
Because the Microphone Capsule and Circuit Board gate every recipe, craft those first and let their count decide how many devices you can finish. Then decide your Speaker run based on whether you are building Telephones, Cellphones, or both.
A common pattern is to start with the Microphone, since it needs the fewest distinct parts and no Speaker, then move to the Cellphone once you have Glass Pane on hand, and finally commit four Iron Ingot to a Telephone for a fixed location. That order keeps you from stalling on iron partway through a build.
Whichever you pick, the Microphone Capsule is the component you will run out of first. Keep a steady supply of them and the rest of the recipes stay open.
Covers the mod’s in-game guide topics: Telephone Cellphone Microphone