Analog E&M Trunks

Telesis Systems Offering Analog E&M Trunks

• Telesis Business Phone Systems:
• 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 E&M trunk card has four line circuits that satisfy conditions for AT&T Type-V connections. Each port may individually be set to either a two- or four-wire interface by appropriate configuration of the on-the-board jumpers. The Xymphony operating software supports many different line and register signaling types over the E&M lines. An additional detector on the M-wire checks the DC feed on the line for faulty conditions at far-end equipment. The analog E&M trunk card is available for 600 ohm resistive reference impedance. Each E&M port can be programmed as incoming, outgoing, bothway trunk, or unavailable.

Telesis systems have analog E&M trunks to connect to PSTN or private network

Signaling on analog E&M trunk lines

• Pulsed line with decadic-address signaling
• Continuous line with DTMF, MFC-R2, MF-R1 register signaling
• Signaling types widely employed in CIS countries:
• ANI (Automatic Number Identification) detection and query
• Address signaling
  • Dial Pulse
  • MFC-R1.5
  • Pulse Packet 1
  • Pulse Packet 2
  • Pulse Packet 3a
  • Pulse Packet 3b
• Line signaling
• CL-1B
• OCL-1B
• TCL-1B