||On demand access
using a modem and regular telephone line.
||2400 bps to 56
||Twisted pair (regular
- Available throughout
most of province.
- Cheap but slow compared with other technologies.
- Speed may degrade due to the amount of line
line and router required.
||64 Kbps to 128
- Not available throughout province but becoming
- An ISDN line costs slightly more than a regular
||Special cable modem
and cable line required.
||512 Kbps to 52
in some cases telephone lines used for upstream requests.
- Must have existing cable access in area.
- Cost of bring service into an area and trenching
cable can be prohibitive.
Asymmetric Digital Subscriber Line
|This new technology
uses the unused digital portion of a regular copper telephone line
to transmit and receive information. ADSL is asymmetric since it recieves at
6 to 8 Mbps per second but can only send data at 64 Kbps.
A special modem and adapter card are required.
|512 Kbps to 8 Mbps
||Twisted pair (used
as a digital, broadband medium)
- Doesn’t interfere with normal telephone use.
- Bandwidth is dedicated not shared like with
- Bandwidth is affected by the distance from the
network hubs. Must be within 5 km (3.1 miles) of telephone
- Only available at a few urban regions at present.
- Not networkable
||Access is gained
by connection to a high speed cellular like local multi-point communications
system (LMCS) network via wireless transmitter/receiver.
||2 Mbps or more
Requires outside antenna.
- Still in the early test stages.
- In theory its capable of super speeds of 10
mbps or more.
- Can be used for high speed data, broadcast TV
and wireless telephone service.
||The computer sends
request for information to an ISP via normal phone dial-up communications
and data is returned via high speed satellite to rooftop dish,
which relays it to the computer via a decoder box.
Requires outside antenna.
- Bandwidth is not shared.
- Satellite companies are set to join the fray
soon which could lead to integrated TV and Internet service
using the same equipment and WebTV like integrated services
- Service is one way with a slow uplink speed.
- Requires an Internet service account.
- Phone line is busy while online.
||Provides a type
of "party line" connection to the Internet.
Requires a FRAD (Frame Relay Access Device)
similar to a modem, or a DSU/CSU.
|56 Kbps to 1.544
- May cost less than ISDN in some locations.
- Limited availability across Ontario.
|Only a portion
of the 23 channels available in a T1 line is actually used.
||64 Kbps to 1.544
- Cheaper than a full T1 line with growth options
of 56 Kbps or 64 Kbps increments as required.
||Special lines and
equipment (DSU/CSU and router) required.
cable, or optical fiber
- Typically used for high bandwidth demands such
as videoconferencing and heavy graphic file transfers. Many
large businesses and ISP use T1.
for ISP to Internet infrastructure.
- Very large bandwidth
- Extremely expensive and complex
for ISP to Internet infrastructure within Internet infrastructure.
for large company backbone or Internet backbone.