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What is DSLAM and how it works?
DSLAM Definition: A DSLAM, or Digital-Subscriber-Line-Access-Multiplexer, is a network distribution device that aggregates individual subscriber lines into a high-capacity uplink. They allow for the high-speed transmission of DSL technology using legacy copper lines.
What authentication mechanism is used by bras?
Users are “authenticated” through the use of DHCPv4/v6 Option-82 inserting their Circuit-ID into their initial DHCP Discovery – this identifies the physical location of the user based on the tail that they are connected to (this would be done at an aggregation switch between the xPON network and whatever backhaul gets …
What is the function of DSLAM?
Explanation: DSLAM stands for Digital Subscriber Line Access Multiplexer and it’s used by Telcos to convert the analog signals to digital signals for the purpose of providing internet. The DSLAM located in a telco’s Central Office does this function.
What is an IP DSLAM?
IP-DSLAM stands for Internet Protocol Digital Subscriber Line Access Multiplexer. User traffic is mostly IP based. Traditional 20th century DSLAMs used Asynchronous Transfer Mode (ATM) technology to connect to upstream ATM routers/switches.
What is the difference between DSLAM and Msan?
Fiber optic cables are used to create upstream links for data processing. For faster uplinks, SDSL connections are used whereas for slower connections ADSL connections are used. Multi-service Access Node or MSAN is used to connect a telephone line to the central network in a telephone exchange.
What is a PPPoE connection?
Point to Point Protocol over Ethernet (PPPoE) is a type of broadband connection that provides authentication (username and password) in addition to data transport. Most DSL providers use PPPoE to establish Internet connections for customers.
What does bras stand for?
A broadband remote access server (BRAS, B-RAS or BBRAS) routes traffic to and from broadband remote access devices such as digital subscriber line access multiplexers (DSLAM) on an Internet service provider’s (ISP) network. BRAS can also be referred to as a broadband network gateway or border network gateway (BNG).
What is the difference between Dslam and Msan?
What is SDSL in networking?
A symmetric digital subscriber line (SDSL) is a digital subscriber line (DSL) that transmits digital data over the copper wires of the telephone network, where the bandwidth in the downstream direction, from the network to the subscriber, is identical to the bandwidth in the upstream direction, from the subscriber to …
What is a remote DSLAM?
The equipment, wiring and transmission systems carrying trunks in neighborhoods is collectively known as the outside plant. This remote DSLAM is usually installed in a small enclosure that is secured to the side of a larger enclosure called a Serving Area Concept (SAC) box, or an Outside Plant Interface (OPI).
How are DSLAMs connected to the PSTN network?
Customers connect to the DSLAM through ADSL modems or DSL routers, which are connected to the PSTN network via typical unshielded twisted pair telephone lines. Each DSLAM has multiple aggregation cards, and each such card can have multiple ports to which the customers’ lines are connected.
Where are DSLAM units located on the Internet?
These high capacity uplinks, either ATM or Gigabit Ethernet, connect subscribers to their Internet service providers (ISPs). DSLAM units are typically located in telephone exchanges or distribution points.
How does a DSLAM work in a coaxial network?
A cable modem termination system (CMTS) in a coaxial network essentially performs the same function as a DSLAM unit in a DSL network. In the same way that a DSLAM feeds subscriber lines to the Internet service provider (ISP), a cable modem termination system (CMTS) feeds the data of hundreds of cable modems and connects users to their ISPs.
How does a DSLAM aggregate the DSL lines?
Depending on its device architecture and setup, a DSLAM aggregates the DSL lines over its Asynchronous Transfer Mode (ATM), frame relay, and/or Internet Protocol network, i.e., an IP-DSLAM using Packet Transfer Mode – Transmission Convergence (PTM-TC) protocol (s) stack.