OLT LTE-8X centrální optické linkové zakončení-Turbo GEPON


central office node terminal (Turbo GEPON)

The OLT LTE-8X central office node terminal is designed to provide broadband access over Passive Optical Networks (PON). Access to the transport network of the provider is realized through 10 Gigabit and combo Gigabit uplink interfaces. Turbo GEPON interfaces are used to connect to Passive Optical distribution Networks (PON). Up to 64 subscriber optical terminals can be connected to each interface by one fiber. The Dynamic Bandwidth Allocation (DBA) enables to provide a downstream rate up to 2.5 Gbps.

The LTE-8X application enables the operator to build scalable fail-safe “last mile” networks, providing a high level of safety in urban as well as rural areas. The OLT LTE-8X provides subscriber devices control, packet traffic switching and connection to transport networks.

Uplink connection:
2 10G SFP+ ports
4 10/100/1000 Base-T / 10/100/1000 Base-X SFP combo ports
4 10/100/1000Base-T ports
8 Turbo GEPON ports (2.5Gbps)
Up to 512 ONT to one node
RSSI support

Common interface support for device control through CLI, Web, SNMP, RS232 console;
Processing of all device modules configuration data; Aggregate switch functions with support for the following features
MAC address learning /aging
МАС address quantity restriction
Unknown МАС address processing
Broadcasting traffic restriction
Multiaddress traffic restriction
Quantity of multicast groups up to 2000
Q-in-Q support in accordance with IEEE802.1ad
Static routing*
Dynamiс routing is based on RIP, OSPF protocols*
Bidirectional Forwarding Detect (BFD) for uplink interfaces*
Port insulation, port insulation within one VLAN
Received Signal Strength Indication (RSSI)

Interaction with internal monitoring and control devices by Telnet, SSH, HTTP, HTTPS*, SNMP protocols;
Error data gathering of device and interface modules, alarm and information messages forming for monitoring systems; Temperature conditions and ventilation system control; Software updating control.

* Currently not supported

Processor: Marvell, ARMvSTE architecture
Clock frequency: 800mHz
Core quantity: 1
Main memory: DDR2 SDRAM 256 МБ 320 Mhz
Nonvolatile memory: 32MB SPI Flash

Ethernet switch: Marvell Packet Processor
Switch productivity: 128 Gbps
Table of МАС addresses: 16К
VLAN support up to 4К in accordance with 802.1Q
Quality of Services (QoS)

USB interface (compatible with USB 2.0 specification)

Network interfaces
2x10GBase-X (SFP+)
2x (10/100/1000Base-T / 1000Base-X (SFP))
Optical transceivers: 1G SFP, 10G SFP+
Serial port: Rs232
8 2.5 Gbps GPON ports

Port modes:
Duplex/ half-duplex mode 10/100/1000Mbps for electrical ports.
Duplex mode 1/10 Gbit/s for optical ports.

SFP PON parameters
Connector type: SC/UPC
Receiver sensitivity: from -30 to -6 dB
Transmission medium: fiber optical cable SMF- 9/125, G.652
Optical power budget (up/downstream): 30,5 dB /30 dB
Min. optical loss up/downstream: 11 dB/15 dB
Spectral width of the laser up/downstream: Δλ1 nm/1 nm
Wavelength for transmission up/downstream:1310/1490 nm
Transmission speed up/downstream:1,25/2,5 Gbps
Splitting ratio: up to 1:64
Max. transmission distance: up to 20 km

Supported standards:
IEEE 802.3 10BASE-T Ethernet
IEEE 802.3u 100BASE-T Fast Ethernet
IEEE 802.3ab 1000BASE-T Gigabit Ethernet
IEEE 802.3z Fiber Gigabit Ethernet
ANSI/IEEE 802.3 NWay auto-negotiation
IEEE 802.3x Flow control
IEEE 802.3ad LACP
IEEE 802.1p Traffic class expediting and dynamic multicast filtering
IEEE 802.1ad Provider Bridges (QinQ)
IEEE 802.1v
IEEE 802.3 ac
IEEE 802.1d STP Spanning Tree Protocol
IEEE 802.1w RSTP Rapid Spanning Tree Protocol
IEEE 802.1s MSTP Multiple Spanning Tree Protocol IEEE
802.1x User authentication
Power consumption not more than 60 Watt
Typical application diagram

Turbo GEPON network

Broadband subscriber access via “Fiber to the Home” is the highest quality method of sending Triple Play, as it provides high data transmission rate at a long range.

The primary advantage of PON technology is the absence of the active nodes which require a power supply on a OLT to ONT section, that significantly reduces expenditures for network exploitation. In addition, PON technology enables to save on cable infrastructure because of the reduction in the total length of optical fiber, as far as one fiber is used for a group of up to 64 subscribers from central node to splitter.
Turbo GEPON LTE-8X equipment produced by Eltex provides the best solution for network building in tenement houses and cottage settlements. It enables to connect both large and small corporate clients in business centers.

Ordering Code:


Part number

OLT LTE-8X, 8 SFP-xPON ports, 4 10/100/1000 combo ports, 2 SFP+(10G) ports, L2+ switch, RSSI


SFP xPON 2,5 GE 20 km, 1 fiber


SFP+ 10GE 10 km, 2 fiber, 1310 nm


SFP 1,25 GE 20 km, 1 fiber, TX/RX


SFP 1,25 GE 40 km, 1 fiber, TX/RX


SFP 1,25 GE 80 km, 1 fiber, TX/RX


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