sysmoBTS 1002

Small-form-factor, low-power single-TRX 200 mW (23 dBm) indoor GSM BTS

Introducing sysmoBTS (data sheet)

sysmoBTS front side

The sysmoBTS is a new low-power, small form factor IP-backhaul GSM BTS.

It offers supreme cost efficiency and is suitable for a wide range of applications, including:

  • Rural cellular networks in lowest-ARPU regions

  • GSM related research and development laboratories

  • Production testing of GSM/GPRS terminal equipment

  • Rapidly deployable GSM networks

  • Private GSM networks (PBX style use)

  • In-building coverage/capacity extension

  • Remote area GSM deployments, utilizing any IP-based satellite back-haul service

Benefit from sysmocom's world-class experience in all areas of cellular networks from RAN to core network, permitting flexible integration of other network elements like BSC into the BTS itself.

As the only BTS world-wide, sysmoBTS permits you to run a completely autonomous small GSM network from within the BTS. No external BSC/MSC/HLR/VLR required!

sysmoBTS starter kit

Like most GSM network components, the installation, configuration and operation of GSM networks requires some know-how on GSM networks and protocols.

In order to ensure the best possible customer experience, we are offering a sysmoBTS starter kit (data sheet) which is our turnkey solution.  Just unpack it, power it up, insert SIM cards into phones and run your own single-cell autonomous network.  The starter kit includes a fully pre-configured system with 10 SIM cards as well as indoor antennas and four hours of remote support for configuration and installation.

Mechanical / Electrical specification

Dimensions of enclosure (W x H x D)

165 x 125 x 59 mm (indoor / table-top enclosure)

Dimensions of PCB assembly

160 x 120 x 40 mm


650 g (with metal enclosure), < 200 g (PCB assembly)

RF Input (SMA)

• GSM 850/900/1800/1900 quad-band uplink band

• Sensitivity: -106 dBm (exceeding 3GPP TS 05.05 pico BTS requirements)

RF Output (SMA)

• GSM 850/900/1800/1900 downlink band

• Max. output power:

(850/900): 23 dBm GMSK, 20 dBm 8PSK

(1800/1900): 23 dBm GMSK, 20 dBm 8PSK


TI Davinci (ARM926 @ 405 MHz + DSP @ 804 MHz)

Input Voltage

5 V (DC), power consumtion: <= 10W (typ.), 13W (max.)


Passive. Active cooling optionally available depending on customer-specific enclosure or environmental requirements

Internal Memory

128 Mbyte SLC NAND Flash, 128 Mbyte DDR2 SDRAM, microSD socket

Communications Interface

RJ45 Ethernet (100-Base-Tx)

Software / Logical specification

Number of Transceivers

1 TRX / 8 timeslots

Supported timeslot configurations


Back-haul (Signaling)

A-bis according to TS 08.58 and TS 12.21, encapsulated over TCP/IP; Gb (NS/UDP/IP) for GPRS

Back-haul (voice)

RTP/UDP/IP with FR/EFR/AMR payload according to IETF and ETSI specs


A5/1, A5/2 and A5/3


GPRS PCU with limited feature set.  Hardware and L1 also EDGE capable, but not implemented in PCU

Max. concurrent calls

14 (TCH/H on 7 timeslots)

Max. simultaneous SMS

60 (7*SDCCH/8 + 1*SDCCH/4)

Operating System

Embedded Linux (Poky based)

Available Options / Configurations


Hardware Options

Software Options

  • Internal uSD Card slot for extended memory

  • Clocking: VCTCXO or OCXO or GPS disciplined

  • Antenna Duplexer

  • 2W downlink PA and uplink LNA kit

  • Outdoor enclosure (pole mount type)

  • Wall-mount enclosure

  • PoE power splitter (802.3af compatible)

  • G.SHDSL modem for 2-wire copper back-haul

  • BTS-only (A-bis/IP interface)

  • integrated BSC (A/IP interface)

  • NITB: Fully autonomous GSM PBX

  • GPRS PCU with Gb interface (Q4/2012)

  • SDK for customer-specific applications on BTS