vdsl2

In fact, many people hope that the 2007 3G licences will be able to distribute digital trunking licences to some of the emerging operators, such as railcom, so that even if the 2008 Olympic Games cannot replace the digital trunking system in time, So can also make the domestic digital trunking communication standards can have more powerful support and European and American standards a high and low. VDSL2 Technical Features In recent years, with the

Broadband Access Network is a frequently used access method. So I have studied the development and complementarity of broadband access networks. I would like to share with you here, hoping to help you. In recent years, with the rapid development of broadband Internet technology and broadband access network services, broadband access network users have gradually evolved from a single application of high-speed Internet access to comprehensive applications such as VoIP, IPTV, and visual communicati

network security. In addition, in the future, it is possible to activate HDTV for users, and each HDTV will occupy 10 Mbps of bandwidth. Therefore, VDSL2 with two-way mbps bandwidth will be the main direction of DSL development in the future; to protect investment in existing networks and consider application targeting NGN/IMS, it is best for DSLAM to smoothly transition to Access Gateway AG. Ii. Line Conditions DSL line quality may be affected by va

been a long debate over the two standards, facing the choice of the two modulation methods. The QAM method is simple and easy to develop, and the DMT method is more complex. Although with the development of ADSL2 + technology, many people have doubts about the application prospects of VDSL technology, on the other hand, VDSL technology has unparalleled advantages in bidirectional symmetry and high bandwidth within a short distance, so people may look forward to VDSL technology. It can be said t

communication quality of leased line users; other users can flow to GE upstream DSLAM equipment. 2) For DSLAM with FE upstream, if the number of users is less than 200, or in remote areas, the uplink resources are limited, the original uplink mode can be retained; if the number of users exceeds 200, you can merge multiple DSLAM users into one DSLAM device based on the actual situation, and use GE uplink. 3) the original use of STM-1, E1 and FE cascade DSLAM, can be removed according to the spec

make full use of copper adsl2+ and VDSL2 technology, and networking mode can be combined with FTTX, using fttn/c+adsl2+ or FTTN/C+VDSL2 technology. Epon's market share is expanding gradually under the premise that the technology cost of epon is decreasing gradually. The wireless aspect mainly uses the 3G broadband connection technology, these technologies have the ubiquitous seamless coverage superiority

, metropolitan area, gathering, The core to the application of End-to-end fixed broadband network solutions. The ideal technology of constructing full-service broadband As an important part of the whole business broadband network, the broadband access network is undergoing profound changes. On the one hand, xDSL technology gradually from adsladsl2adsl2+ to provide a higher bandwidth VDSL2 upgrades, which also requires vdsl2dslam closer to the user s

There are many things worth learning about broadband access technology. Here we mainly introduce how to achieve bidirectional symmetric transmission speed of Mbps, which can be upgraded from ADSL, this section describes the use of broadband access technology to achieve stable transmission quality. Recently, NEC and NEC Magnus Communications announced that they will provide communication operators with the latest "AM3150R2" product of the "AM3100 series" Integrated

relationship with the booming AD-SL technology, has become a key factor affecting the vitality of VDSL technology. In terms of standards, neither the international four-band standard nor the domestic three-band standard has defined either the QAM or DMT modulation methods, as a result, there has been a long debate over the two standards, facing the choice of the two modulation methods. The QAM method is simple and easy to develop, and the DMT method is more complex. Although with the developmen

to bring up the "copper wire access into the Gigabit era. It is understood that G. fast technology can achieve 1 Gbps ultra-broadband access on existing copper wire resources (telephone lines or coaxial cables. In the future, G. fast technology may be mainly used in FTTB/FTTD scenarios that are less than 250 M away from the end user, with a target bandwidth of 500-1000 M per household. As you are closer to the user, you can get a relatively higher bandwidth, and G. fast will be used as a gigabi

gradually trying FTTx. Experts said that in many developed regions, telecom operators have begun to optimize the broadband access network according to the "FTTx + ADSL2 +/VDSL2" construction model. They believe that the "light-to-copper retreat" is not only time-ordered, but also space-oriented. In the early days, PON technology can target some high-end users with high bandwidth business needs, or, as a supplement to xDSL, xDSL is provided in areas w

scenarios. It is ideal for FTTB/C small-capacity application scenarios and can be used as FTTx MDU or small DSLAM applications. Supports ADSL2 +, VDSL2, POTS, LAN, SHDSL, and other types of broadband access; supports GE/FE, EPON/GPON, 10G-EPON, and many other uplink connections; supports point-to-point (P2P) and point-to-point (P2MP) applications, supports star, chain, ring and other networking methods. A lot of data is mosaic.The appearance of the

more users to accept IPTV This is IPTV A driving factor for development. The second driving factor is ADSL +. , And vdsl2 With special transmission technology, it can be transmitted more quickly. There is also a new application-layer error correction code to ensure IPTV Through DSL Transmission with high quality. Here we also use DVB In close cooperation, we have dedicated rules for DVB . Fourth, we are talking about using existing home wiring to dep

the entire network egress, using D-Link DSL-604 + wireless ADSL Router as the wireless access device. This product uses a physical design that combines wired ports and wireless interfaces, so that the network can support wireless connections from various terminal devices. Similarly, in the solution, D-Link provides two optional NICs: DWL-650 + and DWL-120 +, users can choose as needed. The main features of this solution are: large business traffic and fixed service locations, which can achieve

: ◆ FTTP: a new generation of network services, with 100 Mb/s and n channels. ◆ FTTC: multi-channel high-definition TV, which is connected in VDSL2 mode from the roadside distribution box, with 35 Mb/s, three high-definition channels or eight standard channels plus one VOD channel, IP voice service VoIP), high-speed Internet access 5 Mb/s ). ◆ FTTN: for the broadcast and television business, ADSL2 is used for access from the transfer box, 15 Mb/s, 1 h

developed countries that focus more on operational efficiency and help them reduce OPEX. However, in the long term, access layer MPLS is a major direction for future product development. Optical Copper With the gradual advancement of optical fiber copper withdrawal, DSL access nodes are gradually moved down, and the market share will decrease year by year. However, Wei leping, director of the Technology Committee of China Telecom group, believes that as a way to achieve the last several hundred

signals are configured, and 64E1 is configured; For access layer devices used to simulate user and DSL user access, ZTE MSG5200 is adopted. This device can support normal and reverse polarity analog users and broadband access users such as ADLSL2 + and VDSL2, ZTE MSG5200 supports the self-switching function. In case of connection failure between the access layer network element node and the control layer node, the internal communication of voice user

the corresponding permissions. Then, the remote host sends encrypted information to the VPN device in the enterprise network center over the Internet. When the data packet arrives at the target VPN device, the data packet is unwrapped, and the digital signature is verified and decrypted. Remote broadband access through VPN In this solution, VPN devices choose Avaya VPN gateway products, network center using VSU-2000 for high-speed data exchange to meet the needs. VPN devices and mobile users ar

modification possible, which makes it easy for Traditional Ethernet chip manufacturers to design EPON chips. Currently, the price of the third-generation EPON chip is not higher or even lower than that of the previous two generations. Regarding the high cost of GPON, Changgang believes that with the expansion of the application scale, the cost of GPON is continuously decreasing. "So far, the large-scale application of GPON may reach a critical point. We can see that the world's major operators

At present, the high-bandwidth access networking mode is mainly PON-based FTTX access. The main aspects and assumptions involved in cost analysis are as follows: Device cost of the access segment (including various access devices and lines, and average to each first-line user) Construction cost (including construction cost and other overhead cost, Usually 30% of the total device price) Operation and maintenance costs (generally about 8% of the total cost per year) Regardless of the actual instal