Analog Trunks

Telesis Systems Offering Analog Trunks

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

Technical Specifications

The analog DC loop trunks (i.e., FXO ports) can detect line DC feed, polarity reversal, and 12 or 16 kHz charge pulses and are capable of receiving Caller ID information transmitted according to the ETSI ETS 300 659-1 standard as an FSK signal burst. Overvoltage and overcurrent protection on analog trunks conforms 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.