GPRS USB wireless modem

الوصف

General features: • Quad-Band GSM **0/**0/***0/***0 MHz • GPRS Multislot class *0 • Output power: – class 4 (2 W) for EGSM**0 – class 1 (1 W) for DCS***0 – class 1 (1 W) for PCS***0 • AT Hayes GSM *7.*5 and GSM *7.*7 • AT commands for RIL compatibility (RIL/NDIS) • SIM application toolkit (SAT Release *9) • Supply voltage range 3.2 – 4.5 V • Terminal Type: USB 2,0 • Interface : USB 2.0 • Dimension/Weight : <*0g • Ambient temperature: –*0 ℃…**5 ℃ • Auto switch-off at **5 ℃ Specification for fax: • Group 3, class 1 Specifications for data GPRS : • Multislot class *0 • Full PBCCH support • Mobile station class B • Coding scheme CS1– CS4 • 4 slot downlink (*6.6kbps), 2 slot uplink Specifications for SMS: • Point-to-point MO and MT • SMS cell broadcast • Text and PDU mode Specifications for voice: • Half rate (HR) • Full rate (FR) • Enhanced full rate (EFR) • Adaptive multi rate (AMR) • Basic handsfree operation: – Echo cancellation – Noise reduction