telecommunication exchange
type: Concept
preferred label: تبادل مخابراتی @fa
related: electronic switching system

automatic telephone system
type: Concept
preferred label: سامانه تلفن خودکار @fa
related: electronic switching system

electronic switching system
type: Concept
alternative label: stored program control
broader: telecommunication switching
preferred label: سامانه سودهی الکترونیکی @fa
related: telecommunication exchange
related: semiconductor switche
related: telecommunication control
related: automatic telephone system
scope note: stored program control

telecommunication switching
type: Concept
narrower: electronic switching system
preferred label: سودهی مخابراتی @fa

semiconductor switche
type: Concept
preferred label: سوده نیم‌رسانا @fa
related: electronic switching system

telecommunication control
type: Concept
preferred label: کنترل مخابراتی @fa
related: electronic switching system