Yeastar IP-PBX systems and VoIP gateways

Yeastar P-Series and S-Series are the phone-system servers at the centre of a VoIP installation: they register the SIP phones, connect to SIP trunks or analog lines, and provide call routing, voicemail and recording. Yeastar TA and TG gateways connect analog phones, fax machines and GSM lines to the IP system.

What this range covers

  • P-Series PBX appliances (P520, P550, P560, P570) with unified communications features
  • S-Series PBX (S20, S50, S100, S300, S412) with modular telephony cards
  • FXO, FXS, BRI, PRI and GSM modules
  • TA series analog gateways (TA100 to TA800) for analog phones and fax
  • TG series GSM gateways (TG100 to TG800) for mobile trunks

Typical applications

  • Offices replacing a key telephone system
  • Hotels, clinics and schools with many extensions
  • Companies with several branches linked over IP
  • Call centres and customer service desks

Key capabilities

  • SIP trunks, analog lines and GSM trunks on one system
  • Auto attendant, ring groups, queues, voicemail and call recording
  • Linkus softphone and web client on P-Series
  • Remote extensions and branch linking
  • Modular cards so line types can change later

Functions vary by model and firmware; see each model page and the official datasheet.

Selection questions

  • How many extensions and how many concurrent calls?
  • Which trunks: SIP from a provider, analog lines, GSM or ISDN?
  • Are remote or mobile users needed?
  • Will call recording or a contact-centre function be used?

Prepare an enquiry

ISD in Kuching, Sarawak handles Yeastar PBX enquiries for projects in Sarawak and Malaysia. Send the full model code and quantity, or describe the site. Supply only; ISD confirms the model separately.

Describe your requirement

Frequently asked questions

What is the difference between P-Series and S-Series?

P-Series is the current platform with unified communications, Linkus clients and a modern interface. S-Series is the modular PBX line with plug-in telephony cards for analog and digital lines.

When do I need a TA or TG gateway?

A TA gateway connects analog phones or fax machines to the IP-PBX. A TG gateway adds GSM SIM trunks so calls can go out over the mobile network.

Which Yeastar products does ISD list?

The model list links every Yeastar PBX, gateway and module reference with its own page on this site.

Yeastar IP-PBX systems and VoIP gateways - models on this site

Related guides and categories

Official reference

Series and model names follow Yeastar's public product information; confirm specifications on the official Yeastar website. Written by ISD, checked 2026-11-01.