4E1 to Ethernet converter

Product OverviewRDT companyoffer its Ethernet over 4 E1 converter. The 10Base-T Ethernet interface to 4 E1 interface converter which offers a channelized E1 and 10Base-T interface conversion. This equipment offers electrical level conversion between 10Base-T Ethernet interface and a G.703 / E1 (or fractional E1) interfaces.The VCL-Ethernet over 4 E1 ?4E1/10(100) Base-T Interface Converter provides the user with 4 x Ethernet over 4 x E1 conversion enabling the user to transport Ethernet data over up to 4 E1 links. The equipment be always installed and used in pairs, with one terminal being installed at either end of the network.The VCL-Ethernet over 4 E1 - 4E1/10(100) Base-T Interface Converter is an Ethernet extension device utilizing TDM telecom infrastructure (the telecom network of E1s, or of PDH, SDH and E1/E3/SDH microwave etc. carrying E1s). It converts the Ethernet data into E1 frame format for transmission over the existing TDM (E1) links and then re-converts the E1s back into Ethernet data the far-end terminal, to BRIDGE two Ethernet LANs over the existing E1-based telecom network. The device can effectively utilize the redundant bandwidth of telecom operators? existing TDM network to transport Ethernet data with low investment.ApplicationsThe equipment may be used for the following purposes: Bridging Ethernet LANs over existing TDM (E1) telecom network. Extending Ethernet networks utilizing TDM (E1) landline based telecom infrastructure. Interconnecting DSLAMs to Central Routers over PDH/SDH Interconnecting IP based GSM base stations Interconnecting WiMAX base stations Using telecom network of E1s / PDH / SDH microwave etc. carrying E1s to transport Ethernet data. In all cases the equipment be always installed and used in pairs, with one terminal being installed at either end of the network. FeaturesProvides 4 E1 interfaces Provides 4 Ethernet 10/100Mbps (Electrical) ports for each converter The maximum transmission rate of Ethernet data over E1 links is 32.768Mbit/s Optionally provides 3 Ethernet 10/100Mbps (Electrical) ports and 1 Ethernet (Optical) port for each converter E1 supports three working modes of transmission. Un-Framed/Transparent, Framed, CAS / PCM 30 format Supports VCAT (virtual concatenation) and LCAS (link capacity adjustment scheme) protocol, and complies with ITU-T G.7042 specifications Mapping to E1 complies with ITU-T G.7043 and G.8040 specifications Supports differential delay of up to 120ms on E1 links Complies with IEEE 802.3 specifications Support VLAN tagging as per 802.1Q Supports 802.1 based QoS feature Supports base priority classification for incoming 802.1Q packets Supports IEEE 802.1p standard recommended Class of Service traffic categorization Supports 802.1P priority classification for ingress packets Provides 4 different user selectable ratios (0:1, 1:2, 1:5 and 1:10) for delivery of high and low priority packets Supports 802.1 p based classification of 802.1Q based VLAN Packets which provides a mechanism for implementing Quality of Service (QoS) User selectable ports for enabling / disabling the QoS service Supports port based priority if the Equipment fails to classify the 802.1Q packets Supports port based Ethernet bandwidth limit for ingress traffic Port based Ethernet limit allows user to provide different speed for the different customers to utilize bandwidth according to their requirement. Supports differential delay of up to 120ms on E1 Links Complies with IEEE 802.3 specifications Supports X.86, LAPS and HDLC transmission protocols Supports 100M full-duplex mode Configurable frame length upto 1916 bytes (MTU size) Supports GFP-F encapsulation complying with ITU-T G.7041 Provide smooth adjustment of bandwidth Provides Loss of Frame alarms Provides error frame statistic Supports automatic removal and addition of E1 links Available with MAC address list filtration, learning, and updating functions A large external SDRAM buffering for handling data bursts E1 Interfaces support errors count Supports two synchronization clock modes, Internal clock and Network clock (Loop-Timed clock) 10/100BaseT Interface (Electrical) Number of Interfaces4Interface Types10/100BaseTStandards Compliance IEEE 802.3Transmission Bit Rate10/100BaseT limited to 2.048 MbpsConnectorsRJ-45 (10/100 BaseT Electrical)10/100BaseT Interface (Optical) Number of Interfaces1Wavelength850nm / 1310nm / 1550nmComplianceITU-T G.957Data Rate125Mb/sConnectorsSC E1 Interface - Technical SpecificationsNumber of E1 Port4 E1Line RateE1 (2.048Mbps ?50 bps)Line CodeHDB3FramingUn-Framed /PCM 30 /PCM 31Frame StructureAs per ITU-T (CCITT) G.704ClockInternal, Loop timedElectricalG.703JitterG.823Impedance120 Ohms / 75 Ohms (Optional)ConnectorsRJ-45 Female Mechanical SpecificationsRack MountingStandard 19-inch DIN rack (Ethernet over 4 E1 model)Height266mm (Desk-top or 1U high 19 inch rack mount) Power SupplyInput DC Voltage-48V DC ( nominal ) / AC also availableRange of Input-40V to -60V DCOutput Voltage+5VInput Voltage Reversal ProtectionProvided in the CardOver Current ProtectionProvided in the CardShort Circuit ProtectionProvided in the Card (recovers automatically)Under Voltage< 4.5VOver Voltage5.4V to 5.6VEfficiency at full load>80% Typ.Ripple at full load<5mVrmsSpike at full load<50mVTemperature0 to 55Humidity95% RH (non-condensing)CoolingConvection Cooling