Cronyx Telecom

123458, Russia, Moscow, 8 Tvardovskogo St., building "B", office 103, Cronyx Telecom


Multiplexer - Voice Transcoder E1-XLC


  • Two E1 ports
  • Synchronous interface V.35/RS-530/RS-449/RS-232 or Ethernet
  • ITU G.703, G.704, G.706 and G.823 compliant
  • Up to 1.5 km
  • Transparent for signaling
  • CRC4 framing
  • 14 ADPCM codes supported
  • Clock sources: Internal oscillator, E1 receiver or synchronous port
  • Asynchronous mode for RS-232 interface
  • Digital and line loopbacks
  • Integrated HDLC buffer
  • Integrated BER tester
  • Supervisory RS-232 port
  • Dry contacts alarm interface
  • AC or DC power
  • Upgradeable firmware
  • Certificate N OS-2-SP-0943

The E1-XLC device has two E1 ports (link 0 and link 1) and a digital port (serial or Ethernet). E1 stream from link 1, containing 64 kbit/s PCM coded voice timeslots, is encoded to 16, 24, 32, or 40 kbit/s ADPCM data of link 0. The rest of band is used for transmission of data from digital port. E1-XLC device is transparent to signaling. The ADPCM coding type is selectable from 14 possible variants.

The device is available as a stand-alone desk-top unit and can be AC (220V) or DC (60V) powered.

The digital port can be equipped with V.35, RS-530, RS-232 or X.21 interface with the standard connectors, or multi-standard digital interface. The multi-standard interface is switchable by adapter cable to RS-232, RS-530, RS-449 or V.35 standards.

The device setup is performed by microswitches or via the RS-232 supervisory port. All diagnostics options are controlled from the front panel or the supervisory port.

Currently available models are listed in Prices. Please, contact technical support if you are unsure which model to choose.

ADPCM Transcoder
Supported CodesG.726 (16 kbps, 24 kbps, 32 kbps, 40 kbps)
G.727 (Embedded Codes)
G.721-1984 (16-level, 32 kbps)
Tellabs 24 kbps
Alternate (4-level, 16 kbps)
Alternate (3-level, 16 kbps)
Conexant (data optimized, 32 kbps)
Digital Interface
Data Transfer Rate24-1984 kbps (Nx8 kbps)
Clock Options SupportedTXC, RXC, ETC, ERC
Modem Control SignalsDTR, DSR, CTS, RTS, CD
E1 Interfaces
Line CodeHDB3
Line Impedance120 Ohm (Twisted Pair) or 75 Ohm (Coax Cable), Switches selectable
Receive Signal Attenuation Rangefrom 0 to 30 dB (up to 1.5 km of 22 AWG twisted-pair cable)
Jitter AttenuatorIn either the receive or the transmit path, programmable for 120UIpp attenuation
Frame Structureper G.704
Frequency Offsets AdjustmentControlled Frame Slip
Alarm Interface
Connector Type6-pins Mini DIN (female)
Relay Contact Currentup to 250 ma
Relay Contact Voltageup to 175 VDC
Supervisory Port
Interface TypeRS-232
Serial Protocolasynchronous 9600 bps, 8N1
ConnectorDB-9 (female)
LoopbacksDigital and Line Loops, activated by front panel switch or via supervisory port
BER TesterActivated by front panel switch or via supervisory port

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