AM64/1024A - 1Mbps DSL modem Data rates up to 1024Kbps Operation on 2 or 4 wire circuits Multiple interface options Comprehensive management Remote configuration Extensive self test features Stand alone or rack mountable New Ethernet 10BaseT Bridge / Router Module now available The AM64/1024A is a 1Mbps DSL modem designed to drive full duplex data over unconditioned copper loops such as those meeting BT EPS-8 and EPS-9. The AM64/1024A has the ability to utilise either two or four wires depending on the data rate and distance required. The data rate may be set in increments of 64Kbps up to 1024Kbps. A feature of the AM64/1024A is the ability to trade range with speed (i.e. the speed of the link can be lowered in order to increase the distance) this is known as rate adaption. The AM64/1024A is available with following optional range of interfaces: 10BaseT Bridge Router, X.21 (V.11), X.21bis (V.24), V.35, V.36, RS530 and G.703 (64Kbps Co-directional). Click here for a configuration guide The AM64/1024 has front panel controls which, when used with alphanumeric liquid crystal display, allow local and remote configuration of all operating parameters as well as a full compliment of local and remote testing facilities. The AM64/1024A incorporates Ascom's new generation of 2 / 4 wire digital transmission system using custom LSI circuits. The design uses both linear and non-linear echo cancellation with adaptive feedback equalization to achieve performance with high speed data transfer.   Configuration of the AM series of High Speed DSL Modems Introduction The following configuration guide is applicable to these AM series of DSL modems :- AM64/128EA AM64/512A AM64/1024A For configuration of the AM2048-CAP click here All of the above modems provide synchronous communication of data over twisted copper pair(s). The AM series of modems may be easily configured from their front panel or via a VT-100 terminal, and are available with a range of user interfaces including - X.21 / V.11 , X.21bis / V.28 , V.35 , V.36 , RS530 and 64K G.703 Front Panel Connecting the Modems For initial configuration it is probably best to set the modems up 'back to back'. This can be done by using one of the RJ-45 line leads supplied with the modems. Connect this line lead into the port marked 'line' in each of the modems. Powering the modems on When the units are powered on the following sequence of events should be seen within the LCD display. Testing Self Test Pass AM64/1024A V3.0 * STATUS MENU * S> LTU Not Ready Configuration (Internal timing) Basic configuration is achieved by designating one modem to be a 'Master' and the other to be a 'Slave'. The difference is that the master modem can provide the slave unit with all it's configuration information. Once the master / slave relationship has been set-up all configuration can be conducted from the master end. Configuration of the 'Slave' modem Using the 'left' and 'right' buttons select the 'configuration menu' on the LCD as shown below. * CONFIG MENU * Immediately press the 'down' button or wait for three seconds. One of the following messages will appear :- C> Slave Mode Or C> Ind. Master Or C> Ind. Slave Or C> Master Mode If the message C> Slave Mode is already displayed then the modem is configured correctly for slave operation. Otherwise press the 'Select' button until the LCD shows the message :- C> Slave Mode The 'Program LED' will be lit. Press the 'Prog' button' to implement the slave mode. The 'program LED' will go out and the modem is configured for slave operation. Configuration of the 'Master' modem Repeat the section above, but instead selecting the 'master mode'. C> Master Mode Press the 'down' button once. If an AM64/1024 is being configured it is now possible to select one or two pair operation by pressing the 'select' button. Eg - 1Pair C> 1 Pair Pressing the 'down' button once more will show the data rate menu By using the 'select' button choose the appropriate data rate. Eg - 512K C> Rate = 512K Press the 'prog' button to confirm the configuration and write it to memory. The modem has now been set-up as the master and a data rate has been set along with the number of pairs that are to be used. Synchronisation If the modems have been connected and the master / slave relationship has been configured correctly then the message :- S> LTU Not Ready Should change to :- S> LTU Ready The modems are now sychronised and transmitting data to each other. It is now possible to introduce the modems to the line and connect the DTE equipment.