OLT LTP-4X rev.B

  • 4 GPON line ports 
  • ideal solution for a small town or a block of flats 
  • remote control via CLI, SNMP 
  • compliance with G.988, G.984.x and TR-156 standards 
  • OLT is enables you to provide cable television services together with data transfer 
Optical Line Terminal (OLT) is designed to provide broadband access over Passive Optical Network (PON). 

GPON interfaces are used to connect the optical distribution network (PON). You can connect up to 64 subscriber optical terminals via a single fibre for each interface. Access to the operator's transport network is provided through 10 Gigabit or combined Gigabit uplink interfaces. 

OLT LTP-4X allows the operator to build scalable, fault-tolerant "last mile" networks to ensure the highest safety standards. OLT manages subscriber devices, traffic switching and connection to the transport network. 

Broadband access using FTTH technology is the highest quality version of the Triple Play service delivery, as it provides high data rates over long distances. The main advantage of PON technology is the lack of electrically powered active nodes within the section from OLT to ONT, which greatly reduces the network operating cost. What's more, PON technology saves on cabling infrastructure by reducing the total length of the optical fibre, as only one fibre for a group of up to 64 subscribers is used within the section from the central node to the splitter.

  • MAC address learning/aging 
  • MAC-adresses limit 
  • Unknown МАС-adresses processing  
  • Broadcast traffic limit 
  • Multiple-adresses traffic limit 
  • Up to 1024 multicast groups 
  • QinQ due to IEEE 802.1ad 
  • IGMP Proxy 
  • IGMP Snooping 
  • IGMP fast leave 
  • Ports isolation (within one VLAN) 
Centralized Management system

Eltex.EMS is a centralized network device management system made by Eltex.
  • gathering, customization, monitoring of OLT/ONT 
  • monitoring of devices paramentres and power supply  
  • statistics monitoring of physical and logical interfaces 
  • user's ports management (configuration and profiles) 
  • automatic software updation management of GPON devices 
  • dynamics graphics of statistic parametres demonstration in online mode 
  • physical port demonstrating in graphic mode



  • 2 x 10GBase (SFP+)/1000 Base-Х ports
  • 4 x Combo 10/100/1000 Base-T/1000 Base-X (SFP) ports

Subscriber Line Interfaces

  • 4 x SFP-based GPON (2.5/1.25 Gbps)


  • 9/125 µm single-mode fiber (SMF)
  • Up to 1:64 splitting radio
  • Received Signal Strenght Indication (RSSI)
  • Support DDM (show parametrs in CLI)
    • Digital RSSI
    • Module Temperature
    • Supply Voltage
    • Laser Bias Current
    • Tx Optical Power Output
Class B+
  • Standard ITU-T G.984.2, FSAN Class B+, SFF-8472
  • Max link distance – 20 km
  • Transmitter: 1490nm DFB Laser
    • Data Rate: 2488Mbps
    • Average Launch Power +1,5..+5 dBm
    • Spectral Line Width-20 dB 1.0 nm
  • Receiver: 1310nm APD/TIA Detector/Amplifier
    • Data Rate: 1244Mbps
    • Receiver Sensitivity -28 dBm
    • Receiver Optical Overload -8 dBm
Class C+
  • Standard ITU-T G.984.2, FSAN Class C+, SFF-8472
  • Max link distance – 60 km
  • Transmitter: 1490nm DFB Laser
    • Data Rate: 2488Mbps
    • Average Launch Power  +3..+7 dBm
    • Spectral Line Width-20 dB 1.0 nm
  • Receiver: 1310nm APD/TIA Detector/Amplifier
    • Data Rate: 1244Mb/s
    • Receiver Sensitivity -32  dBm
    • Receiver Optical Overload -2 dBm
    • Receiver Burst Mode Dynamic Range 20 dB


  • Processor - Marvell Packet Processor
  • 128 Gbps switch capacity
  • MAC addresses - 16К
  • 4K active VLAN, IEEE802.1Q, double tagging (Q-in-Q)
  • QoS


  • Power:1
    • 150-250 VAC 50 Hz
    • 48 VDC
  • Max Power: 20W
  • Ambient Operating Temperature: +5° to 40°C
  • Humidity: up to 80%, non-condensing
  • Dimensions: with internal power supply module 430х44х258 (HxWxD) mm, 19–inch, 1 RU chassis


  • ITU-T G.988 GPON
  • ITU-T G.984x GPON
  • IEEE 802.3i 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 Full Duplex and flow control
  • IEEE 802.3ad Link aggregation
  • IEEE 802.1p Protocol for Traffic Prioritization
  • IEEE 802.1Q Virtual LANs
  • IEEE 802.1ad Provider Bridges (QinQ)
  • IEEE 802.1v VLAN Classification by Protocol and Port
  • IEEE 802.3ac VLAN tagging
  • IEEE 802.1d MAC bridges
  • IEEE 802.1w Rapid Reconfiguration of Spanning Tree
  • IEEE 802.1s Multiple Spanning Trees


  • MAC-address learning/aging
  • MAC-address-table limit
  • Handling unknown MAC-address
  • Storm control
  • Support to 1024 multicast groups
  • Double tagging (Q-in-Q), IEEE 802.1ad
  • IGMP Proxy
  • IGMP Snooping
  • IGMP fast leave
  • VLAN 1 port-isolation


  • Eltex.EMS (Eltex Managment System)
1 You can choose this option when ordering