Loop-AM3440-B - QE&M Voice Card

Features:
  • Five E&M signaling types are supported: Type I, Type II, Type III, Type IV, and Type V.
  • B-side E&M is normal, A-side is available
  • TO (Transmit Only) supported
  • User programmable A-law or μ-law coding
  • User programmable loss adjustment
  • User programmable balance 600/900 ohm impedance
  • CAS Signaling convention

 

Description

Loop Telecom’s Q2W/4WE&M plug-in card is designed for the Loop-AM3440-B. E&M provide user selectable A-law or 贡-law coding. The AM3440-B E&M card requires an external cable to support 4-RJ45 ports for connecting to PBX tie lines, carrier facilities, or 4-wire modems. Each RJ45 port has 8 pins supporting the following signaling and transmission pairs: E/M, SG/SB, T/R, and T1/R1. Each 2W/4W E&M card has 3 daughter cards to support multiple choices of TYPES, A/B sides and 2-wire/4-wire manufacture option. User can order pluggable daughter cards for type I, II, III, IV, V and TO (Transmit Only) signaling options. The TO type provides dedicated 4-wire transmit and receive paths to lease-line modem equipment. There are choices of two side mode daughter cards: Using A side mode, the card can operate as switching equipment. Using For B side mode, the card can operate as channel equipment. LEDs provide channel setting and channel status indicators.

Ordering Information

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