Gigabit Ethernet Passive Optical Network ONU


About the Product

The PBN PM520 ONU series provides a complete customer premises solution for PON based Fiber-to-home networks. The PM520 is a home gateway with 4x GbE TX LAN standard ports, 2x VoIP POTS (RJ11) ports and WiFi supporting up to 4 SSIDs. The PM520 can be ordered with an optional full spectrum CATV-Overlay receiver. Based on IEEE GEPON technology, all services are delivered through a single fiber using wavelength-division multiplexing (WDM) technology. Dual fiber option is available for using a CATV-overlay module without WDM.

Having a compact and attractive design, the PM520 is easy to install and operate. It can be placed virtually anywhere. Each PM520 includes a wall-mount and a fiber management tray, the possibility to place splices and spare connectors.

The full-spectrum CATV-overlay module incorporates an Optical Automatic Gain Control (AGC) circuit to maintain a constant RF output level over an optical input power range of -8 dBm to +2 dBm. CATV modules are available with or without monitoring.

Fully integrated into PBN's NMSE Network Management Software, the PM520 can be deployed rapidly in the field without difficult back-office integration.

  • Service access over IEEE802.3ah compliant PON, up to 64 customers per OLT
  • Four auto-negotiating Gigabit Ethernet subscriber ports for 10/100/1000 Mbps, half-duplex/full-duplex, auto-crossover operation (MDI/MDIX) 
  • Management through DOCSIS-like IPv4 DHCP/TFTP flow, an embedded web-server and plain XML configuration file 
  • Enhanced security with 128-bit AES 
  • Supports 4 simultaneous SSIDs allowing for commercial hotspot applications. Perfect for offices or the hospitality industry  
  • Integrated system management by PBN NMSE for broadband data service and CATV operations 
  • Ideal for in-home installation, either on a desktop or mounting on a wall. Includes fiber organizer for standalone installation, as well as a snap-on attachment
  • High-performance optical CATV receiver delivering full-spectrum television from 45 to 1000MHz 
  • Controllable Optical Automatic Gain Control (AGC) circuit to maintain constant RF-output level CATV module 
  • IPv6 supported
  • SIP VoIP functionality with two physical RJ11 POTS 
  • 802.11 b/g/n Wi-Fi capability
Optical Interface

Data TX
operating wavelength 

1310 nm ± 20 nm

Data RX
operating wavelength 

1490 nm ± 10 nm

Optical RX sensitivity 

< -24 dBm @ 1490 nm 

Data RX saturation  

≥ -6dBm @ 1310nm 

Data TX output 

-1dBm to 4dBm @ 1310nm 

Data speed






Optical connector 


User-Side Ports

4x10/100/1000 Mbps, full/half duplex with auto-negotiation, auto MDI/MDIX 


4k MAC addresses total per ONU 


VLAN support, QinQ support 



Frame size 64 to 1522 bytes
Data security 128-bit AES
Connectors 4 x RJ45, 2 x RJ11
CATV Performance
CATV input

-8 to +2 dBm 

CATV ON/OFF control

ON/OFF by microcontroller 

CATV wavelength

1550 ± 5 nm 

RF output

20 dBmV (80 dBuV) @ -5 dBm(1) 

RF bandwidth 45 ~ 1000 MHz
RF flatness ± 1 dB typical
± 1.5 dB maximum
RF return loss > 14 dB
RF connector SCTE F-type
CATV Link Performance

42 CENELEC channels (as per EN50083-3)





> 48 dB

< -55 dBc

< -61 dBc

110 NTSC channels (as per NCTA standard)





> 48 dB

< -55 dBc

< -61 dBc

VoIP Performance

SIP v2

Voice Codecs

G.711, G.729 


Call forward unconditional 
​Call forward on busy
Call forward on no answer
Call hold / release
Call waiting
Caller ID
Line Echo Cancellation (LEC)
Adaptive jitter buffer
Packet Loss Concealment
Comfortable Voice Generator
Modem/Fax support (T.38) 


Option 66 & 67, supporting auto provisioning and associated DHCP option codes for TFTP config server

Phone connectors 2 x RJ11 (POTS)
Input voltage

12 Vdc, 1.5 A

Mains power adapter

100~240 Vac, 50~60 Hz, 0.5 A max. 

Power consumption

< 16 W (data, VOIP, CATV, Wi-Fi) 

Operating temperature -10 ºC to +50 ºC
Storage temperature -20 ºC to +70 ºC
Operating / storage humidity 10 % to 90 % (non-condensing)
(H x W x D)
46 mm x 207 mm x 147 mm
Net weight 0.55 kg

Carton dimensions
(H x W x D)

88 mm x 325 mm x 210 mm
Packed weight (2)  1.2 kg
Shipping carton dimensions
(contains 10 units)

450mm x 445mm x 345mm 

Shipping carton weight
(contains 10 units)
13 kg


(1) Measured with PBN LTM15 test transmitter over 5 km fiber, set for -5 dBm optical input at 1550 nm with 4 % OMI. 

(2) Including AC Power Adapter and accessories. 

The PM520 series is ideal for use in commercial and residential installations when value is a priority. The application diagram shows a typical hybrid HFC-FTTx scenario with CATV overlay utilizing PBN's AIMA3000.

Due to its extensive feature set, the PM520 has been successfully deployed in fiber-to-home and hospitality businesses where multiple Wi-Fi SSIDs, IPTV, and security applications are used in a dense short-haul deployment. Integrated into a single management system, the entire HFC-FTTx environment is able to be monitored and provisioned by the operator from a single screen.

For the CATV overlay components, PBN's 1RU EDFA and LTE product line can be used instead of the larger AIMA3000 carrier-grade RF headend solution based on operator needs. 




Gigabit Ethernet Passive Optical Network ONU 


CATV Options



No Video

1550 nm CATV Module (with monitoring) 


POTS Options 


Two RJ11 POTS ports 


WiFi Options

802.11 b/g/n



Single Fibre 

Dual Fiber (1) 

Fiber Connector Options 


SC/PC ( for models without CATV only ) 

(1) Dual fiber version only used with CATV module without WDM. 



Standard Models 

PM520-00-VO-W-S-P     P2MP CPE for GEPON, 4x GbE, 2x FXS, Wi-Fi, SC/PC
PM520-TV-VO-W-D-S     P2MP CPE for GEPON, 4x GbE, CATV, 2x FXS, Wi-Fi, dual fiber SC/APC+LC/PC
PM520-TV-VO-W-S-S     P2MP CPE for GEPON, 4x GbE, CATV, 2x FXS, Wi-Fi, single fiber SC/APC

Other configurations available upon request. Please contact your PBN sales representative. 



AC Power Adapters 

ONU10-PS-XX     PM/CP/DPON Power Adapter - with XX=AU (Australia), CN (China), EU (Europe), UK (United Kingdom), US (United States), CH (Switzerland)

Additional country-specific AC Power Adapters are available upon request.