What are analogue data circuits?A Telecom NZ service :-(
Telecom have said that they are phasing out these type of data services in favour of their Digital Data Services.
Types of Telecom analogue circuits
There are three type of analogue leased line available:
What does it cost?
Installation for A1 and A2 is $420 per end, A3 is $520 per end.
Monthly analogue circuit charges consist of an access charge at each end
then a fixed step charge between the two ends of the circuit.
Until recently there was also a distance charge but this has not been removed. Access per end: A1 $45, A2 $90, A3 $90.
Fixed City step charge is $90.
So for example an A1 circuit within the free dial area of Auckland would cost $820 installation then the monthly rental would be $45+$45+$90 = $180.
Ordering an analogue linkThese can be obtained from the nearest Telecom Business Centre or Sales office and they will post original copies to you or fax them directly.
The application consists of four pages.
Page 1. General Company information and billing addresses Pages 2 and 3. The site drop information, address, contact people, location in building where link is to be terminated. There is one page for each end of the link. You will have to contact your Internet Service Provider to get the exact details to complete for their end of your link. Some service providers prefer to complete the whole document as it makes sure there are no delays due to incorrect or missing answers.
Page 4. Analogue circuit type A1, A2 or A3.
Just about all analogue (telephone) installations are now carried out by Installation companies that contract to Telecom.An A1 analogue circuit requires a single copper line pair. A2 and A3 circuits need two copper line pairs. These data circuits cannot be installed on a line used for 1+1 or other multiplexing schemes for providing more than one analogue (phone) service over a copper pair.
An analogue link is terminated at each end in a standard Telecom jack socket.
It will be labelled as a data circuit and may have a warning not to be used
with a telephone handset.
Internet connection using analogue circuits
Analogue circuits are a viable low cost internet connection where the
distances between the ends of the circuit are less than a few kilometers.
Where both ends of the circuit terminate in the same exchange then the
overall cost can be little more than a normal telephone circuit.
The main advantage over a business telephone line is that there is no
per moinute connection charge. One flat monthly cost is all that is
The main problem with analogue circuits is that they use analogue signalling between modems at each end of the link. This is prone to interference, line noise and drop-outs. Modems have always been a problem. Just getting suitable modems for use with such circuits can be a problem. Getting a modem that can work reliably at the higher modem speeds (28k8 to 33k6) can be almost impossible.
Modems for use with analogue data circuits
A modem on an analogue circuit is normally set up to work in leased line
mode. This will be a configurable feature of the modem.
Modems know to work over analogue circuits include:
Zyxel modems, most in their standard range have two wire leased line settings.
Comet modems, all support two wire leased lines