The UmSITE-TM3 is a cost-efficient tower-mounted GSM solution for a wide range of applications, including:

  • Rural networks
  • Private networks
  • Rapid deployment networks
  • GSM related research and development

You can start building your network from a single UmSITE-TM3 and expand it to a nationwide network.

This tower-mounted base station may serve as a simple BTS or a complete network-in-the-box (NITB). As a NITB it integrates BSC, MSC, HLR, VLR and SMSC core network components. External connectivity is provided by VoIP (SIP) for voice and SIP and SMPP for SMS.

The UmSITE-TM3 has two independent TRX, each with 3W RF transmit power (6W total).


UmSITE-TM3 Specifications

Band GSM 850/900/1800/1900 (selected at order time)
Transceivers 2 TRX (16 timeslots), with 3W per channel (6W total)
Supported configurations CCCH, CCCH+SDCCH/4, SDCCH/8, TCH/F, TCH/H
Voice codecs FR/HR/EFR/AMR; RTP stream
VSAT optimization From 64K to 512K depending on call quality
Ciphering A5/0, A5/1, A5/2 and A5/3
Data GPRS in beta and EDGE support planned
Call capacity Maximum concurrent calls (FR/HR): 15/30
SMS capacity Maximum simultaneous SMS: 124 (15*SDCCH/8 + 1*SDCCH/4)
Mechanical and electrical
Dimensions 300mm x 176mm x 190mm
Weight 8,5 kg
Ingress protection IP65 (IP67 on special request)
Operating temperature -30 °C to +55 °C ambient
Power consumption 45W peak
Input voltage 15-29V DC for full RF output / 12-15V DC for reduced RF output (1.5-2W)
Antenna connector 50 ohm N-type

Environmental testing

For details of tests carried out and performance please see the following blog posts:


  • UmSITE-TM3 datasheet [PDF]
  • UmSITE-TM3 drawings [PDF]