Bonded DSL Rings
Encyclopedia
DSL Rings is a telecommunications technology developed by Canadian
startup Genesis Technical Systems, based in Calgary
. The DSL technology re-uses existing copper telephone network cabling to provide bandwidth of up to 400 Mb/s. The technology also includes quality of service
(QoS) and efficient multicast
.
Genesis reported that two unnamed European telecom providers
began testing the technology in July 2010.
, DSL Bonding (using G.Bond), Resilient Packet Ring
s (RPR) technologies and add-drop multiplexer
s (ADM) in a collector ring instead of the historic tree and branch approach.
Note that the links between the houses are implemented via passive jumper wires that do not come back to the Convergence Node (CN). In this way, a single CN design can efficiently manage 2-16 houses in a given ring. Genesis suggests a maximum of 16 houses in the ring due to the delay introduced by transiting each node to get back to the CO; however RPR has an upper limit of 255 nodes in a ring.
Bonded pairs are used to obtain maximum bandwidth from the CO to the pedestal (DP). The Convergence Node, which is environmentally hardened and powered via the copper wire from the CO, terminates the bonded signals and acts as the gateway node for the subscriber ‘collector’ ring.
DSL Rings technology is based on the Resilient Packet Ring
s (RPR protocol. The technology enables a fail-safe in that, if a single pair is cut, the traffic goes in the opposite direction around the ring to get to the network gateway node. RPR also provides built in Quality of Service (QoS) for traffic differentiation and managed services as well as an Efficient Multicast (EM) capability that significantly reduces overall ring bandwidth requirements for multicast/broadcast video.
Within the DSL Rings architecture the bonded link to the CO/Exchange, which is typically a binder group (20 – 25 pairs depending on the telco), is terminated at the pedestal where a ring is initiated. DSL Rings provides the capability to both terminate the bonded link from the CO and initiate another bonded link towards another pedestal down the road.
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...
startup Genesis Technical Systems, based in Calgary
Calgary
Calgary is a city in the Province of Alberta, Canada. It is located in the south of the province, in an area of foothills and prairie, approximately east of the front ranges of the Canadian Rockies...
. The DSL technology re-uses existing copper telephone network cabling to provide bandwidth of up to 400 Mb/s. The technology also includes quality of service
Quality of service
The quality of service refers to several related aspects of telephony and computer networks that allow the transport of traffic with special requirements...
(QoS) and efficient multicast
Multicast
In computer networking, multicast is the delivery of a message or information to a group of destination computers simultaneously in a single transmission from the source creating copies automatically in other network elements, such as routers, only when the topology of the network requires...
.
Genesis reported that two unnamed European telecom providers
Telephone company
A telephone company is a service provider of telecommunications services such as telephony and data communications access. Many were at one time nationalized or state-regulated monopolies...
began testing the technology in July 2010.
Technical overview
DSL Rings technology combines the capabilities of VDSL2Very high speed digital subscriber line 2
Very-high-speed digital subscriber line 2 is an access technology that exploits the existing infrastructure of copper wires that were originally deployed for traditional telephone service. It can be deployed from central offices, from fiber-optic connected cabinets located near the customer...
, DSL Bonding (using G.Bond), Resilient Packet Ring
Resilient Packet Ring
Resilient Packet Ring , also known as IEEE 802.17, is a standard designed for the optimized transport of data traffic over optical fiber ring networks...
s (RPR) technologies and add-drop multiplexer
Add-drop multiplexer
An add-drop multiplexer is an important element of an optical fiber network. A multiplexer combines, or multiplexes, several lower-bandwidth streams of data into a single beam of light...
s (ADM) in a collector ring instead of the historic tree and branch approach.
Note that the links between the houses are implemented via passive jumper wires that do not come back to the Convergence Node (CN). In this way, a single CN design can efficiently manage 2-16 houses in a given ring. Genesis suggests a maximum of 16 houses in the ring due to the delay introduced by transiting each node to get back to the CO; however RPR has an upper limit of 255 nodes in a ring.
Bonded pairs are used to obtain maximum bandwidth from the CO to the pedestal (DP). The Convergence Node, which is environmentally hardened and powered via the copper wire from the CO, terminates the bonded signals and acts as the gateway node for the subscriber ‘collector’ ring.
DSL Rings technology is based on the Resilient Packet Ring
Resilient Packet Ring
Resilient Packet Ring , also known as IEEE 802.17, is a standard designed for the optimized transport of data traffic over optical fiber ring networks...
s (RPR protocol. The technology enables a fail-safe in that, if a single pair is cut, the traffic goes in the opposite direction around the ring to get to the network gateway node. RPR also provides built in Quality of Service (QoS) for traffic differentiation and managed services as well as an Efficient Multicast (EM) capability that significantly reduces overall ring bandwidth requirements for multicast/broadcast video.
Within the DSL Rings architecture the bonded link to the CO/Exchange, which is typically a binder group (20 – 25 pairs depending on the telco), is terminated at the pedestal where a ring is initiated. DSL Rings provides the capability to both terminate the bonded link from the CO and initiate another bonded link towards another pedestal down the road.