telephony
preferred label: مکالمه راه دور @fa
type: Concept
narrower: videotelephony

telephone equipment
preferred label: تجهیزات تلفن @fa
type: Concept
related: videotelephony

visual communication
preferred label: ارتباط دیداری @fa
type: Concept
narrower: videotelephony

television application
preferred label: درخواست تلویزیون @fa
type: Concept
narrower: videotelephony

videotelephony
broader: visual communication
broader: telephony
broader: television application
preferred label: تلفن تصویری @fa
alternative label: videotelephones
type: Concept
scope note: videotelephones
related: telephone equipment
related: teleconferencing
related: television equipment

teleconferencing
preferred label: دورسخنی @fa
type: Concept
related: videotelephony

television equipment
preferred label: تجهیزات تلویزیون @fa
type: Concept
related: videotelephony