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What is SHDSL Internet?

November 17, 2011

SHDSL (Symmetrical Digital Subscriber Line) is a Business Internet connection that provides symmetric bandwidth bit upstream and downstream. Typical ADSL Internet is Asymmetric in that usually has a faster download speed and slower upload speeds.

With SHDSL subscribers can get speeds of up to 10Mb upload and 10Mb download over a standard copper telephone line or fibre depending on how far they are from the exchange, is the exchange enabled for SHDSL and the age and quality of the equipment located between the exchange and the subscribers premises.

Speeds currently available over copper are 10mb/10mb, 4mb/4mb, 2mb/2mb and 1mb/1mb. Lower speeds are available but where upload speed is critical, Business ADSL 2 Broadband with 1Mb upload speed can often be significantly more cost effective.

SHDSL Internet

When using SHDSL subscribers needing to send data doesn’t experience slowing of other incoming data transmissions(eg Web Browsing) as significantly as if using ADSL. Eg sending a 2mb file on a 2mb/2mb connection would theoretically take a quarter of the time when compared to sending the file on a 512k upload connection. Sending the same file on a 10mb/10mb connection would in theoretical terms take 1/20th of the time. Equally SHDSL will send and receive data at the same time.

The Quality of SHDSL is also impacted by the contention ratios. Contention ratio as the number if users on the service. Quality Business Internet Providers will have low or no contention offers. Low contention would see no more than 4 subscribers sharing the service. No contention services provide for a single subscriber on the service and are typically more expensive as the cost of the service is born by a single subscriber. The upside is that subscribers do not share or compete for bandwidth on the connection.

Business Broadband

SHDSL is more commonly used for IP Telephony (for example, Voice over IP or VoIP) using SIP trunks or Hosted PBX applications, Web and Email server hosting, Video Conferencing, Large data file transfers, Corporate LAN to LAN connections such as Virtual Private Networks (VPN) and where multiple remote users require access.

Installation of SHDSL Internet can take up to 20 working days as a dedicated copper line and modem needs to be installed and configured. The service is terminated at a NTU modem that provides Ethernet connectivity to subscriber equipment.

PBX Phone System

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Entry Filed under: Uncategorized. Tags: 1mb, adsl internet, applications web, business broadband, business internet connection, contention ratio, contention ratios, critical business, data transmissions, digital subscriber line, download speed, fibre, incoming data, quality business, service quality, symmetric bandwidth, telephone line, theoretical terms, video conferencing, voice over ip.