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Modem-converter E1-L/M
(Mini box)
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Features:
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The E1-L/M is a fractional E1 access device, for transmitting digital data over framed (ITU-T G.704) E1 channels. Digital data port rates are selectable for any multiple of 64 kbps up to 1984 kbps. User data occupies only the required number of E1 frame timeslots reducing billing to only bandwidth used. E1-L/M also supports unframed E1 channels.
Model E1-L/M is stand-alone (in the metal case of type Mini).
The E1-L/M product is available in three versions of digital interface:
- E1-L/M-ETV - Ethernet 10/100Base-T interface;
- E1-L/M-V - V.35 interface;
- E1-L/M-M - multistandard digital interface (V.35/RS-530/RS-449/RS-232/X.21).
Devices DC powered 36 to 72 VDC.
Possible AC Power Source 176 to 264 VAC from external Power adapter Cronyx AC-DC-48)
Device operation may be controlled via console port (RS-232 port for supervisory terminal connection).
The E1-L/M devices may be configured by DIP switches or from console.
Link testing and loopback control may be performed from console.
When in framed mode of operation, the remote login feature for access the remote E1-L/M device's console is available for E1-L/M devices.
So-called monitoring channel is used (in framed mode only) for accessing the remote device status information and for remote login operation. The Sa4 bit of the timeslot 0 of the E1 frame is used for the monitoring channel operation (according to the ITU-T G.704 Recommendation). In addition, any bit of any timeslot may be assigned for the monitoring channel operation for E1-L/M devices.
The state of the E1-L/M devices may be monitored by SNMP protocol via IP network. The desired Sa bit for monitoring channel operation may be assigned by the SNMP for E1-L/M devices.
Application:
The typical scheme of application E1-L/M
The scheme of application of modem E1-L/M together with a router
Order codes:
Currently available models are listed in Prices. Please, contact technical support if you are unsure which model to choose.
| E1 Interface | |
|---|---|
| Connector Type | RJ-48 (female 8 pin) |
| Line Code | HDB3 or AMI |
| Frame Structure | In acc. to ITU-T G.704, Multiframing: CRC4, CAS. Unframed mode available |
| Frequency Offsets Adjustment | Controlled slip buffers in receive path |
| Line Impedance | 120 Ohm (twisted pair) |
| Receive Signal Attenuation Range | from 0 to -43 dB |
| Jitter Attenuator | On receive |
| Digital Interface: V.35/RS-530/RS-449/RS-232/X.21 | |
| Data Rate | up to 1984 kbps (framed Nx64 kbps), or up to 2048 kbps (unframed), for RS-232 up to 128kbps |
| Clock Signals Supported | TXC, RXC, ETC, ERC |
| Modem Control Signals | DTR, DSR, CTS, RTS, CD |
| Connector Type (multistandard interface) | HDB44 (female) |
| Connector Type (V.35 interface) | M-34 (female) |
| Ethernet Interface | |
| Interface Type | IEEE 802.3 10BASE-T or 100BASE-T (100BASE-TX) |
| Connector Type | RJ-45 (female) |
| Data Transfer Rate | up to 1984 kbps (framed Nx64 kbps), or up to 2048 kbps (unframed) |
| Mode | 100 Mbps full duplex, 100 Mbps half duplex, 10 Mbps full duplex, 10 Mbps half duplex, or autonegotiation |
| Address Table Size | 15000 MAC addresses |
| Maximum Packet Size | 1600 bytes, including MAC header |
| VLAN Support | In acc. to IEEE 802.1q |
| Protocols | Transparent or Cisco-HDLC bridging IEEE protocol, selected automatically |
| Console Port | |
| Serial Protocol | Asynchronous 9600 bps, 8 bits/character, 1 stop bit, no parity |
| Modem Control Signals | DTR, DSR, CTS, RTS, CD |
| Interface Type | RS-232 DCE |
| Connector Type | DB9 (female), 9 pins |
| SNMP Interface (option «-SNMP») | |
| Interface Type | Ethernet 10Base-T |
| Connector Type | RJ-45 (female) |
| Diagnostics | |
| Loopbacks | Local and remote E1 link loops, digital port loop |
| BER Tester | Integrated |
| Control | from Console Port or Remote Login; SNMP-based Management(«-SNMP») |
| Physical | |
| Dimensions | 180 mm x 156 mm x 36 mm |
| Weight | 0,7 kg |
| Power Source | |
| DC Power Source | 36 to 72 VDC (possible AC Power Source 176 to 264 VAC from Cronyx AC-DC-48) |
| Power Consumption | 20 VA Max |
| Environment | |
| Temperature | 0 to +50 °С |
| Temperature of storing | -40 to +85 °С |
| Relative Humidity | 0 to 80 %, non-condensing |
E1-L/M. User's Manual in Russian
E1-L/M-ETV. User's Manual in Russian
MIB files for SNMP management
Cronyx interface cables guide
Return to G.703 Interface Converters or Digital Communication Equipment