GSM/3G/4G LTE Trunk Overview

This topic describes what is GSM/3G/4G LTE trunk and frequency bands supported on Yeastar P-Series PBX System.

What is GSM/3G/4G LTE trunk

A GSM/3G/4G LTE trunk connects the Yeastar P-Series PBX System and the relevant cellular network provider directly, and capitalizes on the cheaper mobile-to-mobile call tariffs.

To use a GSM/3G/4G LTE trunk, you need to install a relevant module on the PBX and insert a SIM card that can work in the supported frequency bands.

GSM/3G/4G LTE Module frequency bands

Module Type Module Model Frequency Band
GSM SIM800
  • EGSM-900 MHz
  • PGSM-900 MHz
  • DCS-1800 MHz
  • GSM850-850 MHz
  • PCS-1900 MHz
3G UC15-A
  • WCDMA: 850/1900 MHz
  • GSM: 850/900/1800/1900 MHz
3G UC15-E
  • WCDMA: 900/2100 MHz
  • GSM: 900/1800 MHz
3G UC15-T
  • WCDMA: 850/2100 MHz
  • GSM: 850/900/1800/1900 MHz
4G LTE EC20-CEFAG
  • FDD-LTE: B1/B3/B8/B5
  • TDD-LTE: B38/B39/B40/B41
  • WCDMA: B1/B8
  • TD-SCDMA: B34/B39
  • CDMA2000 1X: BC0
  • CDMA2000 EVDO: BC0
  • GSM: 900/1800 MHz
4G LTE EC20-CEFD
  • FDD-LTE: B1/B3/B8
  • TDD-LTE: B38/B39/B40/B41
  • WCDMA: B1/B8
  • TD-SCDMA: B34/B39
  • CDMA2000 1X: BC0
  • CDMA2000 EVDO: BC0
  • GSM: 900/1800 MHz
4G LTE EC25-A
  • FDD-LTE: B2/B4/B12
  • WCDMA: B2/B4/B5
4G LTE EC25-AU
  • FDD-LTE: B1/B2/B3/B4/B5/B7/B8/B28
  • TDD-LTE: B40
  • WCDMA: B1/B2/B5/B8
  • GSM: B2/B3/B5/B8
4G LTE EC25-E
  • FDD-LTE: B1/B3/B5/B7/B8/B20
  • TDD-LTE: B38/B40/B41
  • WCDMA: B1/B5/B8
  • GSM: B3/B8
4G LTE EC25-J
  • FDD-LTE: B1/B3/B8/B18/B19/B26
  • TDD-LTE: B41
  • WCDMA: B1/B6/B8/19
4G LTE EC25-V
  • FDD-LTE: B4/B13