ftth cpe gateway
p2p layer 2
DKT designs and manufactures optical and coaxial products for professional broadband operators and service providers. DKT’s unique product line, combined with extensive experience from many years in the industry, makes it a strong partner.
The company was founded in 1977, and is family owned. Its headquarters are in Denmark and it has subsidiaries in Sweden and Finland.
Via a strong network of distributors, customers are served in most parts of Europe. It has always been DKT’s philosophy to challenge the status quo and look for improvements to benefit the customers. This often results in unique products that add value to the installation as well as network performance.
DKT’s mission
DKT’s mission is to be a strong partner in network products for European broadband operators and solution providers. Based on know-how and natural enthusiasm, good ideas are developed into successful products. This is done together with the customer, who furthermore can appreciate the broad product range, the attractive quality/price level and the unique customised products. DKT’s flexibility and proactive attitude assists in optimizing broadband networks.
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about dkt
Specifications are subject to change without notice. DKT is not liable for any misprints or errors.
DKT FTTH gateway evolution ... 3
Product introduction - General ... 5
Technical features ... 7
797xx series - Product introduction ... 9
797xx series - Network termination unit, Media converter and CATV/RF ... 11
797xx series - Fiber termination unit (FTU) / Wall outlet ... 13
796xx series - Product introduction ... 15
796xx series - Characteristics ... 17
796xx series - Options ... 18
FHT GATEWAY Central office
Access network
Building (FTTB)
For more information regarding RF overlay solutions refer to the separate RF overlay brochure
TV
POP
Additional information
Refer to the brochure below for more information regarding optical products.
RF overlay
WAN 10/100 Mbps CA
TV integrated
1
stgen. of
the DKT
gateway
2001
2003
WAN
Auto Sense 100/1000
2006
Compa
ct form
3
rdgen. Modular de
sign
Integrated V
oIP
Ope
n source management
2011
2
ndgen. (discrete design)
2008
2005
dkt ftth gateway evolution
DKT entered the FTTH industry already in 1999 due to the obvious technological benefits of fiber. In 2001 DKT completed development of its very own FTTH gateway, a gateway with Ethernet outputs. In 2003 DKT completed development of its own CATV Rx module for FTTH gateways. This allowed DKT to build FTTH networks with RF overlay, thereby providing further options for network designers.
The next major step was taken in 2005 when DKT launched the next generation of FTTH gateways. DKT’s primary focus with this new design was to build a product that was not only capable of providing high bandwidth, but which was in a discrete enclosure suited to the subscriber’s home. During the following years additional features and options were added. First was the 1 gigabit platform, followed by a new open-source firmware and finally VoIP functionality.
In 2011, the third generation of FTTH gateways were launched, bringing even more flexibility into the extensive range of gateways. With the 796xx and 797xx series, DKT decided to follow two different design paths, both of which are described herein.
The DKT FTTH network is based on a point-to-point (P2P) architecture. Each user is connected by a dedicated fiber, thereby allowing users to be upgraded and connected individually, and thus allowing ultimate network flexibility.
No. 1 with 1 Gbps gateway
Core network
Telephony Internet
Advantages
- Optimized OPEX
- Prolonged gateway lifetime by multi-box solution - Design blends into surroundings
product introduction - general
Introduction
There are two models of FTTH gateways. The 796xx series is a full-size gateway, ranging from management to Multiport Ethernet and VoIP. The 797xx series is a very compact gateway, offering the most basic features for optical to electrical conversion.
Both product series follow the philosophy of utilizing a “two-box” rather than an “all-in-a-box” solution. It is DKT’s belief to separate the OSI layers 1, 2 and 3. This results in a cost-efficient base installation, allows for home network scalability and also permits several independent service providers. This ensures that the base installation does not require upgrading to comply with wireless technology changes and other technologies.
This brochure provides an overview of the benefits associated with the different types of FTTH gateways in the DKT portfolio. Each section provides an overview of the different models.
Summary
796xx series
The 796xx series offers a wide range of features, spanning from multiport Ethernet and VoIP, to more advanced management options such as SNMP and TR-069. This also supports Wi-Fi.
The development of the 796xx series has primary focus on the following two parameters:
• Open-source firmware
- Allows customers to deploy specific features and functions - Nonproprietary solutions
- Can be integrated into any OSS/BSS • Flexible platform
- More than 16 variants available - Supports CATV, VoIP and WiFi as options - Same firmware across all variants - Fiber management casette as an option
797xx series
The 797xx series passive unit, includes as standard, fiber management cassette for G.657A Bend-insensitive Single Mode Fiber installation, 1x SC/PC and 1x SC/APC adaptor and two pigtails.
The 797xx series active unit enables RJ45 and RF/CATV output (optional). The development of the 797xx series has primary focus on the following three parameters: • Low installation/deployment costs
- Simple to install
- Cheap to deploy as the passive and active parts are separated - Permits installation at the fiber entrance of the premises
- Business case examples indicate that it will be feasible to install in all homes • Technology/Vendor agnostic
- The passive FTU can be used for Point-to-Point (P2P) and Passive Optical Network (PON) solutions as a passive ONT
- Can be used to connect to third-party equipment • Neutral and flexible design
- Standard euro outlet form factor, customer perceives this unit as an outlet - Establishes a clear demarcation point between the network and home installation - Comes as standard with 1 fiber for FTTH and 1 fiber for RF/CATV-overlay
Advantages
- Future-proof solution
technical features
The 796xx and 797xx platforms share the same DNA. This section describes the main issues.
DKT claims that layer 2 is the best choice for the gateway
In the Open Systems Interconnection (OSI) multi-layered communication model, Layer 2 refers to the Data Link layer and Layer 3 refers to the Network layer. Layer 2 is the demarcation point and the best choice for the gateway.
Layer 2 - Network topology
The data-link layer. This is used by units that operate upon a MAC address learning concept and is a multiport transparent bridge. Such a unit can make traffic-related QoS decisions. It can also handle multiple traffic services that are separated by VLANs.
Many operators separate their own services from partner services in different VLANs. It is therefore critical that a gateway can distinguish and prioritize according to the network topology.
The end customer network and the operator network are virtually transparent to one another. This is why it is important to protect the operator network from spoofing,
congestion and flooding, and doing this using techniques such as Broadcast Protection, IGMP snooping, DHCP option-82 and ingress/egress rate limitation.
Layer 3 - Network topology
The network layer. This handles the routing of the data, sending it in the correct direction to the correct destination on outgoing transmissions and receiving incoming transmissions at the packet level. The network layer performs data routing and forwarding.
In summary, a router is a Layer 3 device, and some newer switches also perform Layer 3 functions. The Internet Protocol (IP) address is a Layer 3 address. It contains the same functionality as a Layer 2 switch, but can separate a customer network from the operator network and act as a gateway between a private and a public network. This is done by
using a built-in NAT table that makes complicated routing decisions based upon the content of each packet. Typically Layer 3 routers have more advanced features such as firewalls, service packet inspections and Wi-Fi.
Conclusion
DKT has chosen to pursue a pure Layer 2 solution, thereby separating router and gateway functionality. This gives a higher degree of freedom for the operator to optimize choices regarding router components, or even allow the end-user to decide for themselves. DKT’s philosophy is that by separating gateway and router, it is possible to reap the benefits of the long lifetime of the gateway, while also having the option to replace routers as Layer 3 technology, such as WiFi and other protocols, the latter being subject to rapid change when managed at Layer 3. This will imply a lower cost when upgrading a router at customer premises as the gateway itself will remain unchanged.
DKT claims that P2P/Active Ethernet is the best choice for gateways
In a P2P network, each user is connected
via their own dedicated fiber, which means all
fibers require termination and handling at a central Point-of-Presence (PoP). Fiber-only losses allow cheaper optical components to be used in the network since the transmission power and required receiver sensitivity are lower than in PON-based networks. Typical maximum distances are 15 km. Each user has a dedicated port at the switch and the operator can select a flexible growth scenario by using multiple ODFs in cascade. In that sense, the CAPEX and OPEX are attractive at low take rates at the start of a P2P FTTH deployment. The
Ethernet standard offers abundannt functionality to
provide services and manage the data traffic.
Conclusion
DKT have chosen to develop P2P gateways. This is because DKT believes that PON architecture suffers from upgradability and scaleability, especially as the number of subscribers increases per segment. P2P gateways allow for a more future-proof solution as bandwith demands increase with time.
Layer 7/Application
Layer 6/Presentation
Layer 5/Session
Layer 4/Transport
Layer 3/Network
Layer 2/Data link
Layer 1/Physical
OSI model
P2P PON
Performance True 1 Gbps per customer Shared bandwidth across multiple customers
Reliability Dedicated fiber to each household Vulnerability to multiple customer in case of breakdown
Scaleability Easy to migrate from 100 Mbps to 1 Gbps to 10 Gbps
Requires more network planning, risk of topol-ogy change over time
Cost of deployment High initial investment Shared infrastructure, lower investment
Cost of operation Operational expenses lower Operational expenses higher
Standard based Seamless interoperability across multiple vendors
vendor specific functionality on GPON OMCI
Advantages
- Small size outlet form factor (FTU) - Maximum flexibility
- Attractive installation cost (CAPEX) - Minimal maintenance overhead (OPEX) - 1 Gbps Ethernet & RF Overlay (option) - Remote management possibility
View an online video demo of the benefits
Built upon the strong DKT FTTH gateway product line, this is a new series of fiber termination units/wall outlets that offer operators a neutral FTTH termination demarcation point. The series includes a passive part to be installed during fiber termination as the base installation, as well as an active part that can be easily installed by the end-customer.
The design of the 797xx series is similar in shape and size to those seen in regular coaxial outlets in cable TV networks. Being only 88 x 88 mm in size, it is the smallest media conversion unit ever developed by DKT. This allows for a more seamless integration at the customer’s premises, making it practically invisible.
By choosing the 797xx series, it is possible to separate the gateway location from the router location. This allows optimization of Wi-Fi performance in the home and prolong the lifetime of the solution.
797xx series - product introduction
Item no. Base unit* 1x RJ45-LAN, 100/1000 Base-BX WAN CATV Rx
79700* 79721 79723 79724
Ordering information
ZONE STB ANALOG TELEPHONE INTERNET IPTV DVB-C HOME INSTALLATION FTTH NETWORK SURVEILLANCE ROUTERUsage model - single service provider
The gateway is separated from the router. All services come from the same supplier and the router is the key component that supports:
• Wi-Fi • IPTV • Internet • VoIP
• Misc. (surveillance)
The gateway is the fiber termination/media converter and acts as the neutral transparent demarcation point.
Advantages
- The most complete solution on the market (both analogue and digital services)
- Can easily be exchanged by the end-customer - Highly dependable technological design - Practical with very easy installation
797xx series - network termination unit,
media converter and catv/rf
LAN Data
LAN Ports 1 x 10/100/1000 Base-TX (RJ-45)
WAN Data
100 Base-BX-U and 1000 Base-BX-U (auto sense), single mode
Optical connector Pigtail internally
Rx 1490/1500 nm
Tx 1310 nm
Layer 2 wire speed packet switching IEEE 802.1Q VLANs incl. Q-in-Q 10k jumbo frames support
CATV+ Data
RF connector F-male (75 Ohm)
Optical wavelength 1310... 1550 nm
Max. optical input level 0 dBm
Operational optical input level -10 ... -3 dBm
RF bandwidth 45 ... 862 MHz
RF output 84 dBµV
RF flatness ± 2 dB (pre equalization for cable loss/frequency)
CNR typ > 49 dB
CSO > 60 dB
CTB > 60 dB
LED Power internally
Optical connector Pigtail internally
Management
Remote management interface to control CATV module on/off and media converter VLAN/QoS settings
Technical specifications*
Punch holes Active unit Base unit
A base unit can be used as an independent fiber termination unit. Here external fibers are connected under the dust cover via punching holes that are sealed by connector holders.
Employs DKT’s decade of experience in push-on filter technology. The 797xx series is built upon the same principles that allow the device to be easily exchanged by the end-customer without interfering with the fiber installation. Overall reduction of OPEX as on-site visits by
an installer are not required.
Installing the active unit
Learn how the 797xx active part is installed on the base unit by viewing the guide at:
www.dktcomega.com/install_797
Advantages
- Easy installation by the customer - Easy remote upgradability - High dependability
- A flexible modular design (hardware and software)
797xx series - fiber termination
unit (ftu) / wall outlet
Pigtail Data
Fiber length 0.75 m
Fiber diameter 900 µm
Fiber type G.657 A, highly bendable
Fiber color White
Return loss ≥ 60 dB
Insertion loss ≤ 0.3 dB
Connector type SC/APC or SC/PC. Other connectors available upon request.
Adaptor Data
Type SC/APC or SC/PC
Housing color Green (SC/APC) or blue (SC/PC)
Insertion loss ≤ 0.20 dB
Interchangeability ≤ 0.20 dB
Repeatability ≤ 0.20 dB
Technical specifications - pigtails & adaptors
Internal construction
The construction of the 797xx Fiber Termination Unit (FTU) series allows external fibers to be fed to the rear side of the FTU, alternatively via
break-aways from any side, and spliced inside the enclosure. To allow splicing in such a confined space requires that the external fiber is higly flexible, namely of the same fiber type as the pigtails in the FTU.
Superior plast type
The construction employs a special blend of Polycarbonate (PC) and Acrylonitrile butadiene styrene (ABS) plast, containing non-halogen flame retardant, which is non-toxic and environmentally stable. The flame retardants used in this plast type do not violate any regulations or bans of environmental protection in Europe. Furthermore it’s highly UV-resistant and very durable.
WAN TV
Environmental specifications Data
Operating temperature 0º C to 40º C
Max. operating humidity 80% RH (non-condensing)
Storage temperature -20º C to 70º C
Max. storage humidity 95% RH (non-condensing)
Physical characteristics Data
Dimensions passive unit (H x D x W) 35 x 88 x 88 mm
Weight passive unit 115 g
Dimensions active unit (incl. passive unit) (H x D x W) 75 x 88 x 88 mm
Weight active unit (incl. passive unit) 271 g
Plast type PC/ABS
Power characteristics Data
External power supply Typ. <5 W
Input 5 VDC, 1.0 A
Technical specifications - general
The following general environmental and mechanical specifications are applicable for the active and passive units.
Advantages
- Auto-sense 100/1000 Mbps, 16 variants available - Optional: RF overlay, Wi-Fi & VoIP
- Open Source Linux OS platform - No proprietary management - Long lifetime
796xx series - product introduction
The 796xx series utilizes the open access network model. This means that services can be provided by any service provider, simply by adding the service box for the desired service. A 796xx gateway handles QoS, switches tagged/untagged VLANs to the RJ45 ports and acts as a hub for service boxes.
This complies with philosophy of using multiple boxes to handle specific services, thereby dramatically extending the lifetime of the gateway and reducing the network maintenance cost. It even permits consumers to use their own devices, such as routers, thereby allowing operators to eliminate CAPEX by not having to replace routers every few years at customer premises.
Selecting the 796xx series allows separating the gateway location from the router location. This allows for optimizing Wi-Fi performance in the home and increases the lifetime of the solution.
Item no. 4 LAN Ports 8 LAN Ports 100/1000 Base-Bx WAN uplink
SFP Socket VoIP FXS With CATV-RX Item no. 79601+ 79631 79602 79632 79603+ 79633 79604 79634 79611 79641 79612 79642
Ordering information
+ Product available in small quantity
ZONE STB ANALOG TELEPHONE INTERNET IPTV DVB-C HOME INSTALLATION FTTH NETWORK SURVEILLANCE FHT GATEWAY ROUTER
Usage model - open access network
The gateway is separated from the router. This allows services from any supplier and the gateway is the key component supporting: • Additional service boxes when required
• Separation of services by tagged/untagged VLANs • QoS handling by the Gateway
Advantages
- Offers triple-play services
- Two FXS ports with support for multiple phones per line - Flexible management, remote accessibility
796xx series - characteristics
Management Linux-based OS SNMP v1, SNMP v2 DHCP/TFTP Telnet SSH TR-069Power characteristics Data
External power supply
Input 100-240 V AC, 50-60 Hz
Output 5 VDC, 2.0 A
Typ. power consumption < 10 W
WAN Data
100/1000 Base-BX-U (auto sense), single mode
Optical connector SC/PC
Rx 1490/1550 nm
Tx 1310 nm
Optical SFP single cage (module to be ordered separately) IEEE 802.3ah
Approvals and certifications Data
CE Marking Stamped on housing
Safety EN 60950
Emission EN55022 Class B
Immunity EN 55024
Status LEDs
LAN link/activity per port WAN link/activity
Environmental specifications Data
Operating temperature 0°C to 40°C
Max. operating humidity 80% RH (noncondensing)
Storage temperature -20°C to 70°C
Max. storage humidity 95% RH (noncondensing)
Physical characteristics Data
Dimensions (H x D x W) 44 x 104 x 144 mm
Weight 480 g (incl. PSU)
Plast type PC/ABS
CATV (option module) Data
RF Connector F-female (75 Ohm)
Optical wavelength 1310 ... 1550 nm
Max. optical input level 0 dBm
Operational optical input level -10 ... -3 dBm
RF bandwidth 45 ... 862 MHz
RF output 84 dBμV
RF flatness ± 2 dB (pre equalization for cable loss/frequency)
CNR typ. > 49 dB
CSO > 60 dB
CTB > 60 dB
Optical connector SC/APC
VoIP Protocols
SIPv2 - Session Initiation Protocol (RFC 3261, 3264) SDP - Session Description Protocol (RFC 2327) RTP - Real-Time Protocol (RFC 3500, 3551) RTCP - Real-Time Control Protocol (RFC 1889) RFC 2833 AVT Tones for SIP/RTP
G.711 a-law and µ-law 64 kbps G.729 8 kbps
G.726 16/24/32/40 kbps
Comfort Noise Generation (CNG) Packet Loss Concealment (PLC) Dynamic Jitter Buffer (Adaptive)
Call forwarding Call waiting Call hold
Wi-Fi (option) Data
IEEE 802.11b/g/n Internal antenna
Modulation IEEE 802.11b: CCK, DQPSK, DBPSK
IEEE 802.11g: OFDM
IEEE 802.11g/n: 64-QAM, 16-QAM, QPSK, BPSK
Security 64/128-bits WEP, WPA, WPA2, WPS
Support for 4 SSID Support for 1 VLAN per SSID
796xx series - options
Optional fiber management cassette, customer’s
To ease the termination of fiber at the customers premises, DKT offers an optional fiber management casette for the 796xx series. This makes it is possible to feed fibers into the gateway from beneath the unit, splice pigtails onto the external fibers and manage these with fiber guides. This prevents the end customer from accessing the fibers and thereby reduces their possibility of damaging the fibers delivered at the gateway.
Optional Wi-Fi module
The gateway can be fitted with an optional Wi-Fi module. This supports up to four SSIDs being broadcast simultaneously. Each SSID can be mapped into a specific VLAN, where this module receives an IP address via the network. This will not be a DHCP server, but establish a private LAN. However, it will convert the gateway into a hotspot that operators can use as part of their infrastructure.
Installing active unit
Learn how to install the 796xx unit by viewing the guide at: www.dktcomega.com/install_796
or scan this QR tag Active unit
references
For morethan a decade, DKT has successfully provided FTTH gateway solutions. Today, DKT’s customer and partner portfolio for these products includes world-leading international service providers and solution partners such as:
Alcatel-Lucent:
Alcatel-Lucent’s mission is to deliver innovation to satisfy their customers’ need to stay ahead, to evolve, to become radically more efficient, and to move at the speed of ideas. DKT is working with Alcatel-Lucent, providing FTTH infrastructures in the individual Swiss cantons. Alcatel-Lucent offers broadband services based on their switch solution, and this is complemented by the DKT solution.
Ericsson:
Ericsson’s mission is “Innovating to empower people, business and society”. For more than four years DKT has supplied its FTTH gateway solution to Ericsson and is now widely adopted throughout Switzerland. The DKT solution complements the access network based on the Ericsson switch solution. DKT’s solution has proven to be stable and interoperable, and operates both in 100 Mbps and 1 Gbps networks. Several of Ericsson’s customers asked for customized solutions, where DKT tailored its platform to meet customer specific needs.
Cisco:
Cisco as the world’s leading supplier of networking products, has its solution and services proven all over the world. Cisco offers a wide range of products and networking solutions designed for enterprises and small businesses across a variety of industries. For FTTH, DKT has worked with Cisco in Germany and Switzerland, tailoring its platform to work with Cisco and Cisco partner’s infrastructure, and have the combined eco-system running in several major European cities.
NetMania IT:
Netmania IT has established itself as a leading provider of IT services and solutions. The company’s industry-leading expertise in the field of TR-069 comes from working with one of the first providers in the world to adopt the TR-069 CPE WAN Management Protocol. This resulted in the company becoming responsible for the management of one of the largest and most active TR-069 device estates in the world. DKT’s platform is tested against the NetMania ACS lite TR-069 platform, and is certified as regards interoperability.
Netadmin Systems:
Netadmin Systems develops and markets NETadmin, a support system automating operational and business processes in metropolitan, regional and residential broadband networks. Netadmin Systems has a marketleading position in the Nordic countries with a market share of 60% in Sweden. The installed base consists of over 100 customers that provide services to more than one million end customers by the support of NETadmin. Netadmin customers include telecom operators, municipalities, electricity companies, real estate owners and private broadband network owners. For FTTH the DKT platform is integrated into Netadmin OSS/BSS and is widely deployed throughout Europe. By way of these customers, service providers and solution partners with their
vast subscriber base, DKT’s products have been, and are constantly, subjected to serious field testing under varying implementation scenarios. The CAPEX and ROI achieved from DKT’s products by these significant market players are proof of DKT’s concept and product applicability. DKT’s FTTH gateway products have proven their suitability, viability and worth.
www.dktcomega.com
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