SC-355D-2 1 Channel, 2 SIMs GSM Gateway with PSTN

Features:

 Simple to install / easy to maintain. Easy access to GSM networks

 High sensitivity quad band industrial module for clear voice quality

Provide up to 30mA output current for payphone connection

 2 SIM cards (SIM 1 + SIM 2), 3 standby channels (GSM A + GSM B + PSTN)

 5 working modes can be selected or programmed (GSM A/B auto switch, PSTN only, GSM/PSTN auto switch, GSM A only, GSM B only)

 White backlight LCD for parameters and information display

Least Cost Routing, GSM prefix number can be programmed

 Auto-prefix of Local area code (programmable)

 Caller ID display/hiding can be set

 Support polarity reversal signal for GSM metering

 Provide RMS (remote management system) for great convenient maintenance (optional)

 Provide menu list and 4 keys to set parameters and browse calling records

 Network locking / BTS locking / SIM card PIN locking facility

Support extended accumulator battery for redundancy power supply