Kanji info: 通信指令室 — 和英／英和辞典

通

traffic, pass through, avenue, commute, counter for letters, notes, documents, etc.

On'yomi: ツウ (tsuu)、ツ (tsu)

Kun'yomi: とお.る (too.ru)、とお.り (too.ri)、 -とお.り (-too.ri)、 -どお.り (-doo.ri)、とお.す (too.su)、とお.し (too.shi)、 -どお.し (-doo.shi)、かよ.う (kayo.u)

Radical components: マ用込

Stroke order

信

faith, truth, fidelity, trust

On'yomi: シン (shin)

Radical components: 化言

Stroke order

指

finger, point to, indicate, put into, play (chess), measure (ruler)

On'yomi: シ (shi)

Kun'yomi: ゆび (yubi)、さ.す (sa.su)、 -さ.し (-sa.shi)

Radical components: 匕扎日

Stroke order

令

orders, laws, command, decree, good

On'yomi: レイ (rei)

Radical components: 一个卩

Stroke order

室

room, apartment, chamber, greenhouse, cellar

On'yomi: シツ (shitsu)

Kun'yomi: むろ (muro)

Radical components: 厶土宀至

Stroke order