So outages i think are much of a muchness.. I've read threads in forums right here where ISP's have been out for days because of equipment failure, contractual issues (remember Veridas ? ADSL stands for asymmetric digital subscriber lines & uses a single pair of copper telephone lines to deliver your internet connection. You need to go back to basics to figure out how much you make, and do the calcs to figure out how much you can spend on connectivity to make a suitable profit. for 45Mbps you would be lucky to get change from $2000/mo before internet GB charges. actually I am expecting min $1500, upto $3000. You're not likely to see any serious business running a 100 buck ADSL2 connection.What sort of business are you running that you need super speed and unlimited downloads ?Regards,Chris. powertel is mentioned in this recent article regarding "mid-band ethernet" and Haterras as an equipment supplier Alcatel rebadge the Hatteras box and sell it here as the 1521CLIP.I believe they also sell the HN4000 ,rebadged of course , which can provide 40 bonded pairs. This will be a very low cost solution and this is very important in your business that is very competitive. Single-pair high-speed digital subscriber line (SHDSL) is a form of symmetric digital subscriber line (SDSL), a data communications technology for equal transmit and receive (i.e. DSL allows data to be transferred over existing wired telephone lines and is allocated to higher frequency bands to avoid conflicts with data from analog calls. 2. But it accounts for a pretty low percentage of outages overall. The use of fast Internet connections has grown rapidly over the last few years. SDSL is just like ADSL, except that it's done in a way that gives the connection equal speeds in both directions. When we talk about standard internet connections, we are usually talking about Digital Subscriber Line (DSL) connections. They are different in how they are implemented so you probably cannot use the equipment of one for the other. This is the most common setup for broadband, as people don't require these speeds be the same for general internet access. SHDSL (Symmetric High-bit-rate Digital Subscriber Line) is rate-adaptive business-class DSL technology that is based on HDSL2. ADSL (Asymmetric Digital Subscriber Line) je asymetrická digitální linka. this would be delivered via 8 x 5.7Mbps ESHDSL bonded using 8 x ULL pairs. actually I am expecting min $1500, upto $3000, A lot of people have overlooked Telstra (not bigpond) as well. SDSL is called symmetric because it supports the same data rates for upstream and downstream traffic. SDSL is used for applications where data has to flow quickly in both directions. ...and much cheaper. SHDSL: Single-Pair, High-Speed Digital Subscriber Line. A. Symmetric high-speed DSL (SHDSL) was based on high-data-rate DSL (HDSL) and is specified in the ITU recommendation G.991.2 (December 2003) titled "Single-Pair High-Speed Digital Subscriber Line Transceivers".Single-pair SHDSL transceivers can support selected symmetric user data rates in the range of 192 to 2312 kbps using a Trellis Coded Pulse Amplitude Modulation (TCPAM) … I understand SHDSL would be more stable but if I have more than 2 connection, it wouldn't be that much problem I guess..5 ADSL2+ connection would cost around $1500 include phoneline rental.and that will have around 500GB download limit.If some SHDSL can offer 8M/4M and the conection is Unlimited download without any condition and if the price is under 3000, I will seriously consider about it. While HDSL2 is made for 1.544 Mbps, the SHDSL rate range is 192 kbps for a distance of 20,000 ft (6096 m) to 2.312 Mbps for a distance of 10,000 ft (3048 m). ADSL is Asymmetric - the upload and download speeds are different. 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