1/2/4/8 Port (T1/E1/J1)
Digital Telephony Card

astr_brd Compatible with Asterisk and other open source platform, the TEJ series is of the robust hardware architecture to help software developers and service providers deliver cost effective open source solutions, including IP-PBX, gateway, IVR or other telephony applications. With 1, 2, 4 or 8 trunks (T1/E1/J1) per card, the telephony cards of the TEJ series support up to 720 voice calls in a single system in the most difficult situations.

Key Features
  • Configurable T1/E1/J1 
    A kind of highly flexible hardware platform, TEJ series supports software configurable T1/E1/J1 interfaces. Selectable interfaces, T1/E1/J1 lines, are conveniently available in a single box to fit into complex and hybrid environments, which improves system's flexibility.

  • SuPerFormTM superior voice quality and echo cancellation 
    High-adjustability, original and complimentary SuPerFormTM, built on Synway-owned, certified DSP algorithm and carrier-grade applications, can be "automatic adaptability" optimized by site environments for the unmatched voice enhancements(over 128ms echo tail), accurate DTMF/tone detection.

  • Carrier-grade reliability in any situation 
    TEJ series (digital telephony card) utilizes DMA technology, and the optimized DMA streams minimize the hitting to host CPU. Most efforts have been offloaded from host CPU to the on-board DSP resources to maximize system's reliability in the most difficult situation, enabling software developers and service providers to deliver highly flexible and scalable systems (up to 720ports). 

  • Easy use and intelligence 
    To help you design an array of open source applications conveniently, the TEJ series is optimized with rich features like friendly interface, automatic configuration and troubleshooting. It helps design an array of robust Asterisk-based or other open source telephony systems.

  • OS and open sources IP-PBX supported 
    Support Unix, Linux and Solaris; compatible with Zaptel, and support a broad range of open source PBX systems, including Asterisk, trixbox, Yate, FreeSWITCH, CallWeaver, Elastix and more.

Audio Specification
  • CODEC: CCITT A/μ-Law 64kbps
  • Distortion: ≤3%
  • Frequency response: 300-3400Hz (±3dB)
  • Signal-to-noise ratio: ≥38dB
  • Echo suppression: ≥40dB