E1/T1 Cross Rate Converter Card: FRM220-FTEC


E1/T1 Cross Rate Converter

E1/T1 Cross Rate Converter Card: FRM220-FTEC

The FRM220-FTEC is a T1 (US Standard) /E1 (European Standard) converter and timeslot cross connect which enables conversion between one T1 signal and one E1 signal. T1 and E1 signals with framing employ u-Law and A-Law compander encoding principles respectively and encode those analog (voice) signals into 64kbits digital data. The T1 interface supports D4(SF) or ESF frame formats with B8ZS or AMI line code. The E1 interface supports CCS (PCM31) or CAS (PCM30) framing without CRC-4 and framing with CRC-4. The line coding is HDB3.

Tests and diagnostics can easily be performed from the local console interface or via Web based management of the FRM220. Diagnostics include T1 local/remote and E1 local/remote loop back. When placed in a single slot chassis and used standalone without management, the card may be configured by DIP switches.

  • Converts between T1 and E1 data and signaling
  • Enable equipment to operate at T1 and E1 rates
  • Supports G.802 Annex B (T1 over E1)
  • Configures A-law/μ-law and signaling conversion
  • Transparent conversion at 64kbps timeslot level
  • Controlled slip for buffer over or under flow
  • 24 time slots of T1 Nx64 can be inserted into E1 Nx64, 30/CAS or 31/CCS timeslots

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