Tech Blog

Displaying items by tag: csd to ip
Tuesday, 21 February 2017 23:00


RFI will be releasing our new 4G CAT1 version of Maxon’s Intelimax Lite serial modem in April. This will be the first LTE CAT1 modem (with 700 MHz band 28 support) in Australia with a cellular engine that will have approvals from all major carriers in the country.

The Intelimax Lite 4G is designed specifically as a cost-effective serial modem where standard features of data communications are required. This device is ideally suited for low power and low data rate applications in 4G. It is designed to meet the requirements of the cutting-edge LTE market.

The Intelimax Lite 4G has all the essential functionality for today’s M2M environment including Packet Switch Data, 2-way SMS, Circuit Switch Data and IP Stack. This compact and economical device is the ideal solution for high volume applications. The device is easy to configure via AT Commands or Windows GUI and its plug-and-play capability makes the Intelimax Lite 4G the perfect choice for your entry level M2M telemetry requirements. 

The Intelimax Family

The Intelimax family of cellular modems already has an excellent reputation as a reliable industrial modem in the 3G range. This Maxon range includes Intelimax, Intelimax+ and Intelimax Lite - widely used in different industries in applications such as remote meter reading, SCADA telemetry, tracking and fleet management.

For more information contact us on 02 8707 3000 or This email address is being protected from spambots. You need JavaScript enabled to view it.




Published in New Products
Tuesday, 15 September 2015 23:46

Another Plus for Maxon

Intelimax+ and Intelimax Lite have arrived...... Packed with features - The Intelimax has been refreshed to offer you new enhancements to improve the security, reliability and performance of your industrial M2M communications.


The Intelimax+ is a 3G serial modem designed in Australia for industrial M2M remote monitoring applications as well as data collection and controlling the flow of data between devices and control equipment. 

The Intelimax+ is engineered especially to withstand Australia’s vast climate and extreme environmental conditions with operating temperatures between -30° to 85°c.  The Intelimax+ has an impressive full feature set including extensive event recording, connection management, fault recovery, security features, and remote firmware upgradability. Carried over from it’s predecessor, it also boasts enhanced capabilities such as CSD to IP, remote AT commands, SSH, Telnet, remote management, onboard IP stack, FTP and a variety of security features including; secure AT commands, SSLv3 socket, SNMPv3 and secure syslog content.


Intelimax lite 

The Intelimax Lite is designed specifically as a cost effective serial modem where standard features of data communications are required. This device is ideally suited for low power (20-30mA at idle) applications and would be the ideal solution when upgrading from 2G to 3G. 

The Intelimax Lite has all the essential functionality for todays M2M environment including RS-485 hardware option, extreme operating temperatures (-30° to 85°c) and an SMA antenna for improved signal strength. This compact and economical device is the ideal solution for high volume applications.

For more information contact us on 0287073000 or This email address is being protected from spambots. You need JavaScript enabled to view it.




Published in New Products
Sunday, 02 March 2014 23:26

Modem Emulation



Modem emulation assists in the transition from Circuit Switched Data (CSD) to Packet Switched Data/IP (PSD). If the control center management system supports IP but the field devices only support dialing back to the control center using CSD, then you can use the Intelimax to emulate the CSD modem interface. The Intelimax can also be configured to act as an IP stack server for incoming connections if necessary.

Dialing Process

From the perspective of the field device it will dial out a CSD data call like it always has, except the Intelimax will instead establish an IP stack client connection to the server. For example the field equipment may dial the following string: ‘ATDT0412123456’, then wait for the connection to be established by receiving a ‘CONNECT’ message. The Intelimax can be configured to establish an IP stack client connection to one of several different server IP addresses depending on the number dialed.

Intelimax Configuration

The Intelimax must be configured in IP stack auto server or IP stack manual server mode. This configuration can be made using the Intelimax GUI or via AT commands. If the Intelimax is in IP stack manual mode then it will only connect to the network when it receives the ATDT command via serial and will drop the connection when the call is hung up (+++, ATH). If the Intelimax is in IP stack auto mode (server) then it will act as an IP stack server (and therefore could be addressed remotely) until it receives the dial out commands.

Intelimax AT Command Configuration

The Intelimax modem emulation can be configured using the following AT commands:

To enable modem emulation and add a data number to IP address and port number emulation to the list

  • at$$emul=1,phone_number,IP_address,port_number
  • e.g. at$$emul=1,01044204414,,5000

To check current emulation list (must have already enabled emulation)

  • at$$emul?

$$EMUL: 1,3

To Enable/Disable Modem Emulation – this must be enabled on the server Intelimax for CONNECT message

  • at$$emul=0,0 – disable
  • at$$emul=0,1 - enable

To delete a rule from the list

  • at$$emul=2,list_number
  • e.g. at$$emul=2,1

$$EMUL: 1,2

Tuesday, 03 December 2013 23:14

CSD to IP change from CSD call

The Maxon Intelimax modem has the unique in-built feature of being able to change between modes and configure settings remotely over a CSD call. This is especially useful if you have a modem in the field that you need to remotely configure using remote AT commands or the Intelimax GUI but are currently using CSD to talk to this modem. Using these commands lets you change to an IP connection for easy access to the device over an IP connection. This feature is available from firmware versions 0.1.67 onwards.

It is very important to ensure that you can access your modem once this is done which means either using a static IP address (private IP WAN or similar) or a public dynamic IP address such as telstra.extranet the WAN IP of which can be found via SMS.

Dialing Process
Dial out to the modem via a command line terminal session to your data modem using the data number of the SIM card in the Intelimax. The sting will be as follows: ATDT0400123456. Once the ‘CONNECT’ message has been displayed you are connected.
Intelimax Remote Configuration Commands
The following commands can be used to change the settings of the Intelimax:

  • Unlock the CSD programming interface: program.maxon.unlock=admin:admin
  • admin:admin are the default username and password, if you have changed these update this command with the appropriate values in the order username:password.
  • Update the cellular APN: program.maxon.apn=telstra.extranet
  • Update the CPN username, password and authentication: program.maxon.auth=userid:password:chap/pap/none
  • Change the mode of the modem: program.maxon.mode=1

1- IP Stack Auto mode –auto connect IP
2- IP Stack Manual mode –manual connect IP
3- Serial modem mode –for CSD or when end device controls connection

Apply all the settings and reboot: program.maxon.lock
Once the commands have been received by the modem it will display ‘Modem will reboot now’ and the call will be dropped as the modem reboots:
Once the modem reboots (approximately 2 minutes) if a public dynamic IP address has been used it can be found using the following SMS to the phone number (not data number) of the SIM in the modem: