telegraph equipment
preferred label: تجهیزات تلگراف @fa
type: Concept
related: telegraph systems

radio links
preferred label: خطوط ارتباط رادیویی @fa
type: Concept
related: telegraph systems

telegraph systems
preferred label: سیستم‌های تلگراف @fa
type: Concept
related: telecommunications services
related: radio links
related: teletypewriter equipment
related: radio communications
related: telegraph equipment
broader: telecommunications
narrower: teletypewriter systems
alternative label: TELEGRAFO

telecommunications services
preferred label: خدمات ارتباطات دوربرد @fa
type: Concept
related: telegraph systems

teletypewriter equipment
preferred label: تجهیزات ماشین‌تحریر دوربرد @fa
type: Concept
related: telegraph systems

radio communications
preferred label: ارتباطات رادیویی @fa
type: Concept
related: telegraph systems

telecommunications
preferred label: ارتباطات دوربرد @fa
type: Concept
narrower: telegraph systems

teletypewriter systems
preferred label: سیستم‌های ماشین‌تحریرهای دوربرد @fa
type: Concept
broader: telegraph systems