Posts Tagged “ethernet”

Good afternoon. A few days ago I posted about a new Multitech device which I was testing that turned out to be very interesting. Today I’m going to continue talking a little bit about Multitech which is perhaps not a very well-known company, but it has always seemed interesting to me especially for a specific application profile.

It’s a family of products with an architecture that Multitech call “Universal Socket”. In short, as the name suggests it’s about a family of communication modules that all have the pin-out in common i.e. if we create a device with PCB designed for use with one of these “Universal Socket” modules, we can interchangeably “click-in” any of these modules.

What types of modules are in this family?

Well there are a total of 10 modules. On one side we have GSM/GPRS/HSDPA communication modules such as SocketModem iCellSocketModem CellSocketModem HSDPA (note is has a Cinterion HC25),  SocketModem EDGE and SocketModem GPRS.


On the other side we have analog communication modems like SocketModem and SocketModemIP.

Finally we have modules that are suitable for other types of communication like SocketEthernet IP (a module which is basically as Serie/Ethernet convertor), SocketWireless Bluetooth (A Bluetooth -serial module i.e. with SPP Bluetooth profile, class 1 (100m range) and  socketWireless Wifi (a wifi-serial gateway for 802.11b/g networks).

So if I design a device for one of these modules, if one day I want to equip my device with GPRS connectivity, Bluetooth, Ethernet or Wi-Fi etc. for a project, would I only have to swap one module for another?

Yes that’s it.

But would I have to make a lot of software changes?

No. The modules have a common serial communication and configuration interface. All multisocket devices are configured through AT commands and some of them (those that provide IP connectivity) have what they call “Universal IP” in Multitech, a common TCP/IP stack i.e. you only need to create a single host software to control each of the modules, whether it’s a GPRS module, HSDPA, Wi-Fi, Ethernet etc.

Very interesting, the best thing I can do from now on is design my devices with one of these modules.

No. Look at the photo of the “Multisocket HSDPA” module in this post, as I said before is put together with a HC25 Cinterion module. What would be cheaper to use, the Multitech module or just the HC25 module? Well obviously it’s cheaper to just use the HC25 module. The same thing happens with “SocketWireless Bluetooth”, it’s cheaper to use a Bluegiga WT11 module than one of these modules. This means that it will depend on the connectivity features that you need for a particular application.

 So when do you recommend to use this type of module?

From my point of view, and as I said from the beginning, they are very interesting but only designed for devices when we want to provide various connectivity possibilities without needing to redesign hardware and with minimal or no software changes (which really saves time designing and improves “time to market”).

 I hope that you find these modules interesting for an application. Until next time. 



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