Analog Subscribers

Telesis Systems Offering Analog Subscribers

• Telesis Business Phone Systems:
• PX24N (Telesis Nano) IP PBX SoHo System
• PX24U Hybrid IP PBX Business Phone System
• PX24M Hybrid IP PBX Business Phone System
• PX24X Hybrid IP PBX Business Phone System
• Telesis Switching Systems:
• X1 Large Capacity TDM - IP Telephony Switch

Technical Specifications

The analog subscriber interfaces (i.e., FXS ports) can drive loops up to 3,000 ohm resistance (including the terminal equipment) and is capable of sending Caller ID information according to the ETSI ETS 300 659-1 standard as an FSK signal burst where the data transmission occurs during the first long silent period between two ring patterns. Line feeding voltage is 48 VDC. The subscriber interfaces have overvoltage protection, conforming to ITU-T K.20/K.21 recommendations. Additional primary protection devices to those residing in the main distribution frame may also be employed for further protection.