VSOL V1600D8 8-Port EPON OLT in Kenya

The VSOL V1600D8 8-Port EPON OLT is a professional rack-mounted Optical Line Terminal designed for medium and large FTTH, FTTB, ISP, enterprise and broadband access networks. It provides eight EPON PON ports, allowing network operators to divide their fibre infrastructure into multiple independent service areas while managing hundreds of subscriber ONUs from a single platform.

Each EPON port supports a maximum 1:64 optical split ratio, enabling the V1600D8 to support up to 512 ONUs across its eight PON ports. VSOL positions the V1600D8 as a Layer 3 EPON OLT with support for 10 Gigabit uplinks, dynamic routing, VLAN management, DBA, multicast, security controls and centralized ONU management.

The unit uses a 1U 19-inch rack-mount chassis and includes eight Gigabit Ethernet copper uplinks, four 1GE SFP interfaces and four 10GE SFP+ interfaces. This combination makes it suitable for growing ISPs that need substantial subscriber capacity without moving to a larger modular chassis OLT. 

Key Specifications

VSOL's published product specifications list eight EPON PON interfaces, 16 uplink interfaces, 128 Gbps backplane bandwidth and 89.280 Mpps forwarding performance for the V1600D8. 

What Is the VSOL V1600D8?

The V1600D8 is the central active device in an EPON fibre network.

It is installed at an ISP POP, server room, data centre or central network location and communicates with subscriber ONUs through passive optical splitters.

Eight EPON PON Ports

The V1600D8 provides eight independent EPON PON interfaces. 

This makes the OLT particularly suitable for an ISP that wants to assign different PON interfaces to different estates, towns, zones, apartment blocks or commercial areas.

Maximum Subscriber Capacity

VSOL specifies support for 64 ONUs per PON port and 512 ONUs overall.

These figures represent endpoint capacity rather than guaranteed simultaneous bandwidth. Subscriber package speeds, contention, uplink capacity and optical-budget calculations should all be considered.

EPON Port Speed

Each PON interface operates at symmetrical 1.25 Gbps. 

The available bandwidth on each PON tree is shared among the connected subscribers.

Supported PON Modules

VSOL supports several EPON optical module classes on the V1600D8. 

The correct module should be selected according to fibre distance, splitter ratio, splice loss and overall optical budget.

20 km Transmission Distance

VSOL specifies an EPON reach of up to 20 km. 

Actual reach depends on:

• Splitter loss

• Fibre attenuation

• Patch cords

• Fibre adapters

• Fusion splice loss

• Connector cleanliness

• PON SFP optical class

• Engineering safety margin

A proper optical power-budget calculation should always be completed before deployment.

EPON Wavelengths

VSOL lists TX at 1490 nm and RX at 1310 nm for the V1600D8 PON interface. 

16 Uplink Interfaces

A major advantage of the V1600D8 is its extensive uplink configuration.

VSOL's current product specification confirms the V1600D8 provides eight copper Gigabit ports, four SFP interfaces and four SFP+ interfaces. 

10G SFP+ Uplinks

The four 10GE SFP+ uplinks are particularly important for larger ISP deployments.

They allow the OLT to connect to:

• MikroTik core routers

• Aggregation switches

• Data-centre switches

• ISP backbone equipment

• Redundant network paths

Using 10G uplinks can prevent the upstream connection from becoming a bottleneck as subscriber numbers increase.

Why 10G Matters for an 8-Port OLT

Consider an ISP serving 300 active subscribers.

If many customers use packages of 20 Mbps, 50 Mbps or 100 Mbps, a single 1 Gbps uplink could quickly become restrictive during peak periods.

10G uplinks provide much greater capacity for:

• Residential broadband

• Business Internet

• Speed-test bursts

• IPTV

• CCTV

• Cloud services

• VoIP

• Enterprise customers

Layer 3 Routing

The V1600D8 provides Layer 3 capabilities, including static routing, RIP and OSPF. 

This allows the V1600D8 to perform more advanced network functions than a basic Layer 2 EPON OLT.

128 Gbps Backplane Bandwidth

VSOL lists 128 Gbps internal switching bandwidth across the V1600D-series OLTs.

16K MAC Address Table

The V1600D8 supports up to 16K MAC addresses. 

This capacity is useful in larger FTTH networks with hundreds of ONUs and multiple customer devices.

VLAN Support

The OLT supports extensive VLAN functionality.

An ISP can use separate VLANs for:

• Residential Internet

• Business Internet

• CCTV

• IPTV

• Voice

• Network management

• Corporate customers

Dynamic Bandwidth Allocation

The V1600D8 supports Dynamic Bandwidth Allocation (DBA). 

DBA dynamically distributes upstream bandwidth among active subscriber ONUs.

QoS Support

Quality of Service can be applied based on:

• Port

• VLAN ID

• TOS

• MAC address

VSOL lists these QoS capabilities in the V1600D8 datasheet.

This can help prioritize business Internet, voice, video or network-management traffic.

Multicast and IGMP Snooping

The V1600D8 supports IGMP Snooping and up to 256 multicast groups. 

This is useful for applications such as IPTV where the same multicast stream may need to reach multiple subscribers.

DHCP Features

DHCP Snooping can also help prevent unauthorized DHCP servers from disrupting the subscriber network.

Security Features

The V1600D8 includes several network-security controls.

VSOL positions the platform as having flexible firewall and security capabilities for broadband deployments.

Management Options

This gives network administrators multiple options for local and remote OLT configuration.

ONU Configuration and Management

The V1600D8 supports centralized online ONU management. 

Administrators can manage:

• ONU registration

• ONU configuration

• PON port status

• Subscriber service profiles

• VLAN assignments

• Alarm monitoring

• ONU status

• Network troubleshooting

VSOL also promotes template-based configuration for faster deployment. 

Hot-Swap Support

VSOL markets the V1600D8 with hot-swap support, particularly in relation to its power architecture. 

This can improve maintainability because compatible power modules can be serviced without completely dismantling the OLT installation.

AC and DC Power Options

DC support is particularly useful in telecom environments using -48 V battery-backed power systems.

Power Consumption

The V1600D8 has a published power consumption of approximately 55 W. 

For an ISP POP, it is advisable to use:

• UPS backup

• Surge protection

• Proper grounding

• Stable mains power

• Adequate cooling

Physical Dimensions

The 1U format makes the OLT easy to integrate into standard 19-inch ISP and data-centre racks.

Operating Environment

VSOL V1600D8 vs V1600D Mini 4-Port EPON OLT

VSOL V1600D8 vs V1601E02 2-Port EPON OLT

VSOL V1600D8 vs 16-Port EPON OLT

VSOL publishes the V1600D8 and V1600D16 as part of the same pizza-box EPON OLT family. 

EPON vs GPON

The V1600D8 is specifically an EPON OLT. GPON-only ONTs should therefore not be assumed compatible.

Watch VSOL V1600D8 8-Port EPON OLT

Watch on YouTube: https://youtu.be/Owv6f3RbjJg

The VSOL V1600D8 8-Port EPON OLT provides substantially more network capacity than compact 2-port and 4-port OLTs. With eight EPON interfaces and support for up to 64 ONUs per PON, the platform can manage up to 512 ONUs while allowing an ISP to divide its subscriber network into eight independent optical distribution zones. 

Its uplink architecture is another important advantage. Eight Gigabit copper interfaces, four Gigabit SFP ports and four 10GE SFP+ ports provide flexible connectivity to core routers and aggregation switches. This makes the V1600D8 particularly suitable for growing ISPs where Gigabit-only uplinks may eventually restrict subscriber traffic. 

The OLT also provides Layer 3 routing, VLANs, DBA, QoS, multicast, DHCP features and multiple management interfaces. Fiber Optics Kenya can supply the VSOL V1600D8 together with EPON PON modules, ONUs, PLC splitters, ODFs, FAT boxes, fibre closures, ADSS and armoured fibre cables, FTTH drop cables, fusion-splicing equipment and fibre testing tools for a complete EPON deployment. 

Applications of VSOL V1600D8

1. Medium and Large ISPs

Provides sufficient PON capacity for hundreds of fibre subscribers.

2. FTTH Networks

Supports large residential broadband deployments.

3. Residential Estates

Different PON ports can serve individual estate zones.

4. Apartment Developments

Supports several buildings or apartment blocks from one OLT.

5. FTTB Networks

Provides fibre-to-the-building service across commercial and residential developments.

6. Enterprise Networks

Supports passive fibre infrastructure in large organizations.

7. Campus Networks

Eight PON interfaces can serve multiple buildings or departments.

8. Hotels and Resorts

Provides fibre-based broadband, IPTV and network connectivity.

9. CCTV Networks

Supports large IP surveillance networks over EPON.

10. Rural Broadband

Can serve multiple villages or distribution zones from one central POP.

Example 8-Port Network Design

Typical FTTH Architecture

Installation Considerations

Recommended Accessories

Why Buy VSOL V1600D8 from Fiber Optics Kenya?

Frequently Asked Questions

What is the VSOL V1600D8?

The VSOL V1600D8 is a Layer 3 eight-port EPON Optical Line Terminal designed for FTTH and other broadband access networks.

How many PON ports does it have?

It has 8 EPON PON ports. 

How many ONUs can it support?

VSOL specifies up to 512 ONUs overall, with up to 64 ONUs per PON port. 

What is the maximum split ratio?

The maximum split ratio is 1:64 per PON port. 

What is the EPON port speed?

Each PON interface operates at approximately 1.25 Gbps symmetrical. 

What is the maximum transmission distance?

VSOL lists a maximum transmission distance of 20 km. 

What wavelengths does it use?

It uses 1490 nm downstream and 1310 nm upstream. 

What connector type is used?

VSOL specifies SC/UPC. 

What fibre type does it use?

The PON interface is specified for 9/125 µm single-mode fibre. 

Does it support PX20++ modules?

Yes. 

Does it support PX20+++ modules?

Yes. 

How many uplink ports does it have?

It provides 16 uplink interfaces: eight GE RJ45, four 1GE SFP and four 10GE SFP+. 

Does it support 10G uplinks?

Yes. It provides four 10GE SFP+ interfaces. 

What is the backplane bandwidth?

The published backplane bandwidth is 128 Gbps. 

What is its forwarding rate?

VSOL lists 89.280 Mpps for the V1600D8. 

Does it support Layer 3 routing?

Yes. It supports static routing, RIP and OSPF. 

Does it support OSPF?

Yes. OSPFv2/v3 is listed in the datasheet. 

Does it support RIP?

Yes. RIPv1/v2 is supported. 

Does it support VLANs?

Yes. It supports up to 4096 VLANs, plus VLAN translation and Q-in-Q functions. 

Does it support DBA?

Yes. Dynamic Bandwidth Allocation is supported. 

Does it support IGMP Snooping?

Yes. 

How many multicast groups are supported?

The datasheet lists 256 IP multicast groups. 

Does it support DHCP Snooping?

Yes. 

Does it support DHCP server and relay?

Yes. Both DHCP server and DHCP relay functionality are listed.

Does it support SSH?

Yes. SSHv2 management is supported. 

Does it support web management?

Yes. 

Does it support SNMP?

Yes. 

Does it support Telnet?

Yes. 

Does it support CLI management?

Yes. 

Is it rack mounted?

Yes. The V1600D8 uses a 1U 19-inch rack-mount chassis.

What are its dimensions?

Approximately 442 × 319 × 43.6 mm. 

How much does it weigh?

Approximately 4.5 kg.

What is the power consumption?

Approximately 55 W. 

Does it support AC power?

Yes. It supports approximately 100–240 V AC. 

Does it support DC power?

Yes. VSOL lists -36 to -75 V DC support. 

What operating temperature does it support?

Approximately -20°C to +60°C.

Is it suitable for FTTH?

Yes. VSOL specifically positions the V1600D8 for FTTH and fixed broadband deployment. 

Is it suitable for a growing ISP?

Yes. Its eight PON interfaces, 512-ONU capacity and 10G uplinks make it particularly suitable for medium and growing ISP networks.

Can it work with MikroTik?

Yes. MikroTik routers can be connected upstream for routing, PPPoE, subscriber authentication, queues and bandwidth management.

Is it a GPON OLT?

No. The V1600D8 is an EPON OLT. 

Can GPON-only ONTs connect to it?

No. Use compatible EPON ONUs or verified XPON units that support EPON mode.

Do you supply EPON ONUs?

Yes. Fiber Optics Kenya can supply compatible EPON and XPON subscriber units.

Do you supply PON SFP modules?

Yes. PX20, PX20+, PX20++ and PX20+++ modules can be supplied.

Do you supply 10G SFP+ modules?

Yes. Compatible 10G uplink modules can be supplied.

Do you supply PLC splitters?

Yes. 1x2, 1x4, 1x8, 1x16, 1x32 and 1x64 splitter options can be supplied.

Do you supply ODFs and FAT boxes?

Yes. Rack ODFs, fibre termination boxes and subscriber FAT boxes can be supplied.

Do you supply fibre optic cables?

Yes. Outdoor, armoured, ADSS and FTTH drop fibre cables can be supplied.

Do you supply fusion-splicing tools?

Yes. Fusion splicers, cleavers, fibre strippers and splice protection accessories can be supplied.

Do you supply fibre testing equipment?

Yes. Optical power meters, PON meters, VFLs and OTDRs can be supplied.

Do you configure VSOL V1600D8 OLTs?

Yes. Professional OLT configuration, ONU provisioning, VLAN setup, uplink configuration, EPON commissioning and network testing support is available.

Do you deliver outside Nairobi?

Yes. Fiber Optics Kenya supplies fibre optic equipment and accessories throughout Kenya.

Contact Fiber Optics Kenya

Fiber Optics Kenya
Lyric House
7th Floor Room S9
Kimathi Street
Nairobi

Phone: +254 704 991 492
Email: info@fibreopticskenya.co.ke

The VSOL V1600D8 8-Port EPON OLT is a scalable solution for medium and growing ISPs that need significantly more subscriber capacity than compact 2- or 4-port systems. With eight EPON PON ports, support for up to 512 ONUs, 1:64 splitting, four 10GE SFP+ uplinks, 128 Gbps backplane bandwidth, Layer 3 routing, VLANs, DBA, multicast and comprehensive management options, it provides a strong platform for professional FTTH and broadband access networks. 

Contact Fiber Optics Kenya for VSOL V1600D8 8-Port EPON OLTs, EPON PON modules, 10G SFP+ modules, ONUs, PLC splitters, ODFs, FAT boxes, fibre optic cables, professional OLT configuration, installation, testing, bulk orders and nationwide delivery across Kenya.