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Multiplexer - Voice Transcoder E1-XLC
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Features:
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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 Codes | G.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 Rate | 24-1984 kbps (Nx8 kbps) |
| Clock Options Supported | TXC, RXC, ETC, ERC |
| Modem Control Signals | DTR, DSR, CTS, RTS, CD |
| E1 Interfaces | |
| Line Code | HDB3 |
| Line Impedance | 120 Ohm (Twisted Pair) or 75 Ohm (Coax Cable), Switches selectable |
| Receive Signal Attenuation Range | from 0 to 30 dB (up to 1.5 km of 22 AWG twisted-pair cable) |
| Jitter Attenuator | In either the receive or the transmit path, programmable for 120UIpp attenuation |
| Frame Structure | per G.704 |
| Multiframes | CRC4 |
| Frequency Offsets Adjustment | Controlled Frame Slip |
| Alarm Interface | |
| Connector Type | 6-pins Mini DIN (female) |
| Relay Contact Current | up to 250 ma |
| Relay Contact Voltage | up to 175 VDC |
| Supervisory Port | |
| Interface Type | RS-232 |
| Serial Protocol | asynchronous 9600 bps, 8N1 |
| Connector | DB-9 (female) |
| Diagnostics | |
| Loopbacks | Digital and Line Loops, activated by front panel switch or via supervisory port |
| BER Tester | Activated by front panel switch or via supervisory port |
User's Manual in Russian
User's Manual in English
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