Discontinued items

These products are no longer available. The information on these pages are only intended for support purposes.

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TANGO55/56 - Tri Band GSM/GPRS terminal for industrial applications


are designed for use on any GSM network in the world. TANGO55/i and TANGO56/i are Tri Band GSM/GPRS engines that work on three frequencies GSM 900 MHz, DCS 1800 MHz and PCS 1900 MHz or 850 MHz, DCS 1800 MHz, PCS 1900 MHz, respectively. These full type approved integrated modems constitute a self contained, fully integrated implementation of the GSM/GPRS. TANGO55/i and TANGO56/i feature GPRS class B, class 10 (making download at speeds up to 85 kbps) and support the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4. TANGO55/i and TANGO56/i modems incorporate all you need to create high-performance GSM/GPRS solutions; baseband processor, power supply ASIC, complete radio frequency circuit including a power amplifier, internal and external SIM interfaces and an antenna interface as well. The TANGO55/56 are mobile stations for transmission of voice, data calls and FAX as well as short messages (SMS - Short Message Service) in GSM network. To control the GSM module there is an advanced set of AT commands according to GSM ETSI (European Telecommunications Standards Institute) 07.07 and 07.05 implemented.

TANGO55/56 i-option

The TANGO55i/56i modems provide a specific software and hardware (internal TCP/IP stack software with hardware extension) which has been internally implemented for using the embedded TCP/IP stack software. The integration of TCP/IP stack with hardware extension (a TCP/IP module added) into the equipment converts it to a stand-alone client that can be connected to the internet via GPRS network. The modems can also send and receive data by GSM (set into Command-Mode) and GPRS network using TCP/IP stack. They support SMS, DATA and FAX calls.


General Tri Band GSM/GPRS modem
55/55i: 900/1800/1900 MHz
56/56i: 850/1800/1900 MHz
complete FTA/CE and e1 approval
compliant to GSM Phase 2/2+
GPRS features GPRS multi-slot class 10
GPRS mobile station class B
data downlink: max. 85.6 kbps
data uplink: max. 42.8 kbps
coding schemes: CS-1, CS-2, CS-3, CS-4
protocols: PAP, CHAP, PBCCH
Audio features speech code modes: half rate, full rate, enhanced full rate, adaptive multi rate, echo cancellation, noise reduction    
Electrical characteristics power supply: DC 10.8-31.2 V
power consumption (mA/12 V): 13 mA in sleep mode
casing: fully shielded
Physical characteristics dimensions: (L x W x H) 115 x 52 x 26 mm
weight: approx. 83 g
normal: -20 to +55 ºC
restricted: -25 °C/-20 °C to +55 °C/+70 °C
constant temperature control
Phone functions phonebook management: SM, FD, LD, MC, RC, ON, ME
7 different ringing tones
timer function
real time clock
Interfaces D-Sub 9pin female): serial interface RS233 for AT commands
RJ45 8pin (shielded): analog audio
external antenna interface SMB or FME
SIM card reader: small SIM cards
"i" option TCP/IP software stack