PABX vs Intercom: Choosing Office Communication That Scales
Analog PABX, IP-PABX or simple apartment intercom? Match the system to your team size and growth plans.
Missed calls cost orders. Whether you run a 10-person office or a full apartment building, the right internal phone system pays for itself in weeks.
Analog PABX: simple and proven
A classic EPABX connects desk phones over telephone wire with extensions, call transfer and operator console. Lowest cost, zero internet dependence, ideal for small offices that just need internal calling.
IP-PABX: the modern choice
Runs over your office network, supports VoIP trunk lines, mobile softphone apps and multiple branches on one system. Higher upfront cost, but remote work and call recording come built in.
Apartment and building intercom
For residential buildings, a multi-line audio/video intercom at the gate plus room units is what you need — not a full office PABX. Size it by flat count with 20% spare capacity.
Quick sizing rule
Count desks plus common phones, add 20% for growth, and make sure the model supports at least that many extensions. Always buy from a supplier who does installation and after-sales service.