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1. Main description
1.1 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 standby channels (GSM + PSTN)
3 working modes can be selected or programmed (GSM only, PSTN only,
GSM/PSTN auto switch)
White backlight LCD for parameters and information display
Least Cost Routing, GSM prefix number can be programmed
Auto-prefix of Local area code (programmable)
Support polarity reversal signal for GSM metering
Provide menu list and 4 keys to set parameters
Support extended lead acid battery for redundancy power supply (6V, 4Ah)
Network locking / BTS locking / SIM card PIN locking facility (optional)
Provide RMS (remote management system) for great convenient maintenance
(optional)
1.2 Main panel and indicators
4
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