Geemarc CL2000 4G Telephone Adapter - White CL2000_WH_I

Legacy analog telephones cannot connect directly to modern 4G mobile networks. The Geemarc CL2000 bridges this gap, allowing standard analog phones, cordless phones, and PABX systems to operate over 4G LTE, 3G, or 2G networks. Simply insert a Mini-SIM card and connect your existing telephone to the RJ11 port.

Who is it for

Users who want to keep their familiar analog telephone equipment while benefiting from mobile network coverage. Ideal for homes, offices, or locations without traditional fixed-line infrastructure.

Main features

• Supports 4G LTE, 3G UMTS, and 2G GSM networks
• RJ11 port for connecting standard analog telephones
• VoLTE support for high-quality voice calls
• SMS functionality via connected phone
• Caller ID support (FSK/DTMF)
• Emergency call support (e.g., 112, 911)
• Integrated 1000 mAh rechargeable battery for backup
• External detachable antenna (SMA connector)
• LED indicators for power, network, signal, and battery status

Specifications

• Network: 4G LTE / 3G UMTS / 2G GSM
• SIM Card Type: Mini-SIM (2FF)
• Telephone Interface: 1x RJ11 port
• VoLTE: Yes
• SMS: Yes (send/receive via connected phone)
• Caller ID: Yes (FSK/DTMF)
• Emergency Call Support: Yes
• Battery: Integrated rechargeable Li-ion, 1000 mAh
• Standby Time: Up to 48 hours
• Talk Time: Up to 3 hours
• Antenna: External, detachable (SMA connector)
• Power Supply: AC Adapter (Input: 100-240V AC, Output: 5V DC)
• Operating Temperature: 0°C to 45°C
• Humidity: 5% to 95% non-condensing
• Additional Features: Call forwarding, call waiting, three-way calling (network dependent)

Tips

Ensure the SIM card is activated for voice and data services. Position the antenna for optimal signal strength. The battery backup provides continued operation during power outages.