2-Port EPON OLT in Kenya

A 2-Port EPON OLT is a compact Optical Line Terminal designed for small and growing FTTH, FTTB, FTTO, estate, campus and ISP fibre networks. With two independent EPON PON interfaces, the OLT allows network operators to serve two separate fibre distribution branches from a single central device.

Typical professional 2-port EPON OLTs support the IEEE 802.3ah EPON standard, optical splitting of up to 1:64 per PON, transmission distances of up to 20 km, Dynamic Bandwidth Allocation (DBA), VLANs, QoS and centralized ONU management. The exact uplink configuration, optical-module class, subscriber capacity and Layer 3 features vary by manufacturer and model. 

With a 1:64 design, two PON ports can provide up to 128 theoretical ONU endpoint positions. This makes a 2-port EPON OLT an attractive option for ISPs that need more flexibility than a single-port OLT without the higher initial investment associated with 4-, 8- or 16-port systems. 

Key Specifications of a 2-Port EPON OLT

For example, HiOSO's HA7302CST provides two SFP PON ports and supports up to 1:64 splitting and 20 km transmission, while VSOL's V1601E02-DP combines two PON ports with four GE RJ45 and two SFP/SFP+ uplinks. 

What Is a 2-Port EPON OLT?

An OLT (Optical Line Terminal) is the central active device installed at the service-provider side of an EPON network.

The OLT communicates with multiple customer ONUs through an Optical Distribution Network (ODN).

Two Independent EPON Ports

The defining feature of the unit is its two PON interfaces.

Each port can be assigned to a separate fibre distribution tree.

Alternatively, an ISP could use:

This makes subscriber and fibre-distribution planning easier than operating an entire network from one PON interface.

Up to 1:64 Split Ratio

Many 2-port EPON OLT platforms support optical splitting of up to 1:64 per PON interface. HiOSO, for example, specifies a maximum 1:64 split on its 2-PON HA7302 series, while VSOL specifies the same maximum for its V1601E02-DP. 

The maximum split should not automatically be used for every installation. The appropriate ratio depends on the optical power budget, customer bandwidth requirements, fibre distance and network architecture.

Up to 128 ONU Endpoint Positions

At a maximum 1:64 split ratio:

2 PON ports × 64 endpoints = 128 theoretical ONU positions

A 2-port OLT can therefore be sufficient for many neighbourhood ISP deployments.

For example:

Actual subscriber capacity depends on the particular OLT model, traffic demand and optical network design.

1:32 vs 1:64 Splitting

For many small ISP networks, operating below the maximum split can provide additional engineering margin.

HiOSO states that its 2-port OLT can reach 20 km under a 1:32 split, with a maximum supported split of 1:64. 

EPON Transmission Speed

Classic EPON provides approximately 1.25 Gbps symmetrical line rate.

This capacity is shared among ONUs connected to a particular PON interface.

HiOSO describes its two-port EPON platform as supporting symmetrical Gigabit-class uplink and downlink bandwidth under IEEE 802.3ah. 

Up to 20 km Fibre Transmission

Many 2-port EPON OLTs are designed for fibre transmission distances of up to approximately 20 km, subject to the optical budget.

Actual distance depends on:

• Fibre attenuation

• Splitter insertion loss

• Number of splitters

• Connector losses

• Adapter losses

• Fusion splice losses

• PON optical module

• ONU receiver sensitivity

• Engineering safety margin

The fibre route should therefore be designed using optical loss calculations, not the 20 km specification alone.

EPON Operating Wavelengths

A typical EPON OLT uses:

HiOSO specifies 1490 nm transmission and 1310 nm reception for its HA7302CST 2-PON OLT. 

PON SFP Modules

Depending on the OLT model, different EPON optical modules may be supported.

Common options include:

VSOL's V1601E02-DP, for example, officially supports PX20 through PX20++++ PON modules. 

Uplink Interfaces

Uplink configurations vary considerably between 2-port OLT models.

A compact HiOSO unit can provide two Gigabit RJ45 uplinks, while more advanced VSOL equipment can include four GE RJ45 plus two SFP/SFP+ interfaces. 

Always check the exact OLT model before purchase because “2-Port EPON” describes the PON-port count, not necessarily its uplink configuration.

Dynamic Bandwidth Allocation

Professional EPON OLTs support Dynamic Bandwidth Allocation (DBA).

DBA dynamically allocates upstream PON capacity among connected ONUs based on demand and configured service parameters. HiOSO lists DBA among the EPON functions of its HA7302 series. 

This helps provide:

• Efficient bandwidth utilization

• Better upstream traffic management

• Different subscriber profiles

• Improved service consistency

• Support for different bandwidth packages

VLAN Support

A professional 2-port EPON OLT typically supports IEEE 802.1Q VLAN functionality.

An ISP can create separate VLANs for:

This allows multiple services to operate over the same fibre infrastructure while remaining logically separated.

QoS Support

Quality of Service helps an ISP prioritize different types of network traffic.

Typical priorities may include:

1. Voice

2. Business-critical traffic

3. IPTV

4. Residential Internet

5. Bulk downloads

IEEE 802.1P QoS is among the functions supported by HiOSO's two-port EPON platform. 

ONU Auto Discovery and Registration

Many professional 2-port EPON OLTs support automatic ONU discovery and registration.

When an ONU is connected to the optical distribution network, the OLT can detect the new device and allow the network administrator to authorize and configure it.

HiOSO specifically lists ONU auto-discovery and auto-registration capabilities. 

Remote ONU Management

Compatible OLT platforms can also provide centralized management of subscriber ONUs.

Depending on the equipment, administrators may manage:

• ONU registration

• ONU status

• VLAN configuration

• Service profiles

• Bandwidth profiles

• Remote configuration

• Firmware upgrades

• Link status

• Alarms

• Fault diagnosis

HiOSO's 2-PON platform supports remote ONU configuration and upgrades alongside real-time alarm detection. 

OLT Management Options

Management options depend on the manufacturer.

Common methods include:

For example, HiOSO specifies WEB, SNMP and CLI management on its HA7302CST. 

2-Port EPON OLT vs 1-Port EPON OLT

A 2-port model gives an ISP more room for expansion while still remaining compact.

2-Port EPON OLT vs 4-Port EPON OLT

2-Port EPON OLT vs 8-Port EPON OLT

EPON vs GPON

A 2-Port EPON OLT is designed for EPON, so GPON-only ONTs should not be assumed compatible.

Watch 2-Port EPON OLT

Watch the 2-Port EPON OLT video on YouTube

A 2-Port EPON OLT provides a practical balance between cost, subscriber capacity and future expansion. Two independent PON interfaces allow an operator to divide subscribers between separate fibre branches rather than placing the entire network on a single PON tree. With equipment supporting 1:64 splitting, this can provide up to 128 theoretical ONU positions. 

The equipment is particularly suitable for a neighbourhood ISP that expects its network to grow beyond a few dozen subscribers. Instead of immediately purchasing a larger 4- or 8-port platform, the operator can deploy two PON branches and expand the passive optical distribution network progressively as customers are connected.

For a complete installation, Fiber Optics Kenya can supply the 2-Port EPON OLT together with compatible PON SFP modules, EPON/XPON ONUs, PLC splitters, ODFs, FAT boxes, fibre closures, ADSS fibre cables, FTTH drop cables, patch cords, pigtails, fusion-splicing equipment and optical testing tools.

Applications of a 2-Port EPON OLT

Small ISPs

A 2-port OLT is well suited to startup and neighbourhood Internet providers that require more flexibility than a single PON interface.

FTTH Networks

It can distribute fibre broadband to homes through passive PLC splitters.

Residential Estates

One PON port can serve one part of an estate while the second serves another.

Apartment Buildings

The OLT can distribute fibre connections to multiple blocks or floors.

FTTB Networks

It can provide fibre-to-the-building connectivity for commercial and residential developments.

FTTO Networks

Businesses and offices can receive dedicated fibre connections through the EPON infrastructure.

Campus Networks

The two PON branches can connect separate buildings or departments.

CCTV Networks

EPON infrastructure can transport IP surveillance traffic across long fibre routes.

Hotels and Resorts

The network can distribute Internet and other IP services across different buildings.

Rural Broadband Networks

A compact two-port OLT can serve separate villages or distribution zones from one POP.

Example 2-Port FTTH Network

Recommended Accessories

Frequently Asked Questions About 2-Port EPON OLTs

What is a 2-Port EPON OLT?

It is an Optical Line Terminal containing two EPON PON interfaces for connecting multiple subscriber ONUs through passive optical distribution networks.

How many PON ports does it have?

It has two EPON PON ports.

How many customers can a 2-Port EPON OLT support?

A model supporting 1:64 splitting can provide up to 128 theoretical ONU endpoint positions, or 64 per PON. 

What is the maximum split ratio?

Many professional 2-port models support up to 1:64 per PON. 

Can I use a 1:32 splitter?

Yes. A 1:32 design would provide up to 32 endpoints per PON, or 64 across two ports.

Can I use a 1:64 splitter?

Yes, where the OLT and optical budget support it.

Is 1:32 better than 1:64?

It can be advantageous because it introduces less splitter loss and shares the PON bandwidth among fewer subscribers.

How far can a 2-Port EPON OLT transmit?

Many models support distances of up to approximately 20 km, subject to optical-budget limitations. 

What wavelengths does EPON use?

Typical EPON operation uses 1490 nm downstream and 1310 nm upstream. 

What is the speed of EPON?

Classic EPON operates at approximately 1.25 Gbps symmetrical line rate.

Does a 2-Port EPON OLT support VLANs?

Professional models commonly support IEEE 802.1Q VLANs. 

Does it support QoS?

Yes, on supported models. HiOSO's two-port EPON platform, for example, supports IEEE 802.1P QoS. 

Does it support DBA?

Professional EPON OLTs commonly support Dynamic Bandwidth Allocation. 

Does it automatically discover ONUs?

Many models support ONU auto-discovery and registration. 

Can ONUs be configured remotely?

Yes, depending on the OLT and ONU combination. HiOSO's two-port platform supports remote ONU configuration and upgrades. 

Does it support SNMP?

Many models do. HiOSO's HA7302CST supports SNMP management. 

Does it support web management?

Yes, on many professional models. 

Does it support CLI?

Yes, depending on the model. 

Can it work with MikroTik?

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

Can a 2-Port EPON OLT be used for FTTH?

Yes. FTTH is one of its primary applications.

Can it be used for CCTV?

Yes. EPON can carry IP CCTV traffic over fibre.

Is a 2-Port OLT suitable for a small ISP?

Yes. It is particularly suitable for small and growing ISPs that need two fibre distribution branches.

Is a 2-Port OLT better than a 1-Port OLT?

It provides twice the number of PON interfaces, allowing greater subscriber capacity and easier geographical segmentation.

Should I buy a 2-Port or 4-Port EPON OLT?

A 2-port model is suitable for smaller deployments, while a 4-port model provides more capacity for expansion.

Is a 2-Port EPON OLT the same as GPON?

No. EPON and GPON use different standards and protocols.

Can a GPON-only ONU work with an EPON OLT?

Normally no. Use an EPON ONU or a compatible XPON ONU verified to operate in EPON mode.

Do you supply EPON ONUs?

Yes. Fiber Optics Kenya can supply compatible EPON and XPON ONUs.

Do you supply EPON SFP modules?

Yes. Compatible PON optical modules can be supplied.

Do you supply PLC splitters?

Yes. Fiber Optics Kenya supplies bare and connectorized 1x2, 1x4, 1x8, 1x16, 1x32 and 1x64 PLC splitters.

Do you supply ODFs?

Yes. Rack-mounted and wall-mounted optical distribution frames are available.

Do you supply FAT boxes?

Yes. Empty and loaded FAT boxes are available for FTTH networks.

Do you supply fibre closures?

Yes. Fibre splice closures in different core capacities can be supplied.

Do you supply fibre optic cables?

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

Do you supply fusion splicers?

Yes. Fusion splicers, cleavers, fibre strippers and related tools can be supplied.

Do you supply fibre testing equipment?

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

Can you configure a 2-Port EPON OLT?

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

Do you deliver outside Nairobi?

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

Why Buy a 2-Port EPON OLT from Fiber Optics 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

A 2-Port EPON OLT provides a cost-effective platform for small and growing ISPs, FTTH operators, residential estates, apartment developments and enterprise fibre networks. With two independent PON interfaces, models supporting 1:64 splitting can provide up to 128 theoretical ONU endpoint positions, while features such as DBA, VLANs, QoS, ONU auto-discovery and centralized management simplify network operation. 

Compared with a single-port OLT, the two-port configuration gives an ISP greater room for subscriber growth and allows the optical network to be separated into two distribution zones. For networks expected to grow substantially beyond this capacity, 4-, 8- or 16-port EPON OLTs provide a more scalable upgrade path.

Contact Fiber Optics Kenya for 2-Port EPON OLTs, PON SFP modules, EPON/XPON ONUs, PLC splitters, ODFs, FAT boxes, fibre closures, fibre optic cables, OLT configuration, installation support, testing equipment, bulk orders and nationwide delivery across Kenya.