Allo GSM Card - 4 port

Key Features

• Echo cancellation for digital audio quality
• User can modify IMEI and PIN
• 1, 2 or 4 GSM modules
• Quad-band GSM 850/ 900/1800/1900 MHz
• Send/Receive SMS in text mode, AT command ready
• Compatible with Asterisk^TM, FreeSwitch^TM, Elastix^TM, TrixBox^TM based applications
• Front Plate SIM Load technology (switch cards in a few seconds)
• GSM modules are AT&T certificated
• USSD, CLIP, CLIR supported
• DTMF detection ready
• Up to 4 simultaneous GSM calls
• Support external antenna
• Uses GSM channel driver
• Bi-directional calls (Inbound and Outbound calls)
• Fast and easy installation
• Available in both PCIe
• Includes a 5 year warranty against hardware defects
• 30 day no hassle money back guarantee
• FREE Email support included
• Phone Support up to 45 minutes by appointment
• 1 year warranty