Ericsson F250m - Technical Specifications

Technical specifications
GSM AIR INTERFACE
Frequency bands: Triple-Band E-GSM 900, GSM
1800 and GSM 1900
E-GSM 900
Frequencies: TX 880-915 MHz, RX 925-960 MHz
RF power: Maximum 2W (33 dBm),
Power class 4
GSM 1800
Frequencies: TX 1710-1785 MHz,
RX 1805-1880 MHz
RF power: Maximum 1W (30 dBm),
Power class 1
GSM 1900
Frequencies: TX 1850-1910 MHz,
RX 1930-1990 MHz
RF power: Maximum 1W (30 dBm),
Power class 1
Speech codecs: Full Rate, Enhanced Full Rate and
Half Rate
FCT INTERFACES
• Telephone: RJ11 (a/b 2-wire line); POTS interface
• GSM antenna: SMA plug-female (50 ohm)
• SIM card: Small plug-in card, 3V or 5V type
• Input Vdc: 7.5 Vdc (±0.4); 0.8 A (jack: EIAJ
RC-5320A class 4, male)
TELEPHONE INTERFACE (POTS)
• Telephone: Speech
• CLI: ETSI DTMF and V.23; Bellcore FSK
• Line impedance: 600 ohm (default)
• Loop current: 25 mA (off-hook)
• Open loop voltage: 48 V (on-hook)
• Loop resistance: < 650 ohm (off-hook)
• Ringing voltage: 45 Vrms
• Ring load: 3 REN; up to 3 telephone devices
• Call Control signalling: polarity reversal and
loop-break
ANTENNA (included)
• Frequency bands: Triple-Band E-GSM 900, GSM
1800 and GSM 1900
• Characteristics: Omnidirectional
36 Technical specifications