This product is a fixed wireless terminal that uses GSM / 3G WCDMA networks for operation and allows you to make local, internal, and international calls through a common wired telephone using a standard SIM card.

Features:

• Easy installation with a GSM mobile phone SIM card.
• Supports international and domestic voice services.
• Preserves the original functions of the fixed telephone.
• Built-in monitoring circuit and automated restart on failure.
• DTMF transmission and caller ID.
• Connection to user switch (PABX).
• Automatic IP operation with IP settings.
• Corrected input of IP call prefix.
• Supports local numbers and barred numbers.
• LCD screen displaying signal and operating status.
• Supports power-off operation with built-in battery.

Basic technical specifications:

• Networks: 2G GSM850 / 900 / 1800 / 1900MHz, 3G WCDMA (HSPA / UMTS 900 / 2100MHz).
• Voltage: DC 5V / DC 12V.
• Standby: 48 hours, Talk time: 2-6 hours.
• Power consumption: Static ≤25MA, Emission ≤500MA.
• Receive sensitivity: -104db, Antenna gain: 5.0db.

The terminal supports connection with a desktop telephone for making calls, as well as portable terminal operation in areas with weak signals. Additionally, it includes features such as automatic card locking and modem function.