Matrix ETERNITY NE System Manual 9
The Interfaces
ETERNITY NENX supports the following interfaces for connecting to different telecom networks, standard
telephones, IP Phones etc.
The CO Interface
The CO Interface enables ETERNITY NENX to be connected to the PSTN Network. The PSTN Networks across
the world support various standards and differ in features. For example, some networks support Caller ID
Presentation using DTMF signaling, while some support Caller ID Presentation using FSK signaling; some
networks offer 600 Ohms Impedance, while others offer complex impedance.
The versatile architecture of ETERNITY NENX allows it to be connected to such networks differing in their
characteristics.
The CO Interface supports following features:
• Programmable AC Impedance - 600, 900 and various complex impedances.
• Answer Supervision/Polarity Reversal
• Selectable Disconnect Supervision - Polarity Reversal, Open Loop Disconnect
• Selectable Caller ID Presentation - DTMF, FSK
• Programmable Dialing method - Pulse/Tone (with programmable Pulse Ratio/DTMF On-Off period)
• Programmable Speech Tx Gain
• Programmable Speech Rx Gain
• Programmable Disconnect Tone Sensing
• Programmable Flash Timer
• Programmable Loop Current
The Mobile Interface
The Mobile Interface enables the ETERNITY NENX to be connected to GSM/UMTS/LTE network operators
worldwide. ETERNITY NENX's Mobile Interface supports full Quad-Band Operation (GSM900, 1800, 1900MHz) for
world-wide use, for Global, Inter and Intra country roaming.
The Mobile Interface supports the following features:
• GSM 2G, GSM 3G, GSM 4G network support.
• Hot Swapping of the SIM Card.
• Selectable GSM Frequency Bands - 900, 1800, 1900, 850 + 1900, 900+1800 MHz.
• Programmable Network Selection - Manual and Automatic.
• Programmable Network Operator Codes in order of priority (from 1 to 9) in case of Manual Network
Selection.
• Programmable Speech Tx Gain.
• Programmable Speech Rx Gain.
• Selectable Incoming Call Modes - Allow, Ignore, Reject.
• SIM Card protection with a Personal Identification Number (PIN) and Personal Unlock Keyword (PUK).
• Wireless WAN support over 3G or 4G, which can be used to make VoIP calls (if VoIP module is installed).
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