SMSC Short Message Service Centre

Every Short Message has to pass the SMSC. There are different ways to tranfer the Short Message to the Short Message Service Centre. A Short message can reach the SMSC by GSM modem / module and can be transferred to an email or fax.

Manual reception

Make a call to a manual reception and tell them what you want to sent and  to whom. Not very useful in industrial GSM applications.

Automatic answering service

Make a call to an automatic answering service and make a choice from a  number of ready made texts. Not popular in industrial applications also.

Typing on the keypad of your GSM phone

Use your own GSM phone with sending abilities and enter a message and  send it. Can be useful, if you have to send control commands from somebody to a machine, to change parameters. Most GSM phone offers the storage of Short Messages so that you can send from memory of the SIM card.

SMS program

Use a computer with a PSTN modem and a special SMS program. Popular for the sending of Short messages to mobile GSM phones. There are a lot of local SMS programs available. A few of them are freeware and others are shareware. In Germany ( and other countries) the GSM operators offers light versions of SMS programs as freeware. If you have a need for software that have more features, then you have to buy it. If you use a local SMS software, then it is in local language  and the parameters are set for your GSM operators. The other technical problem are the different hardware interfaces like PSTN modem or Datex P ( X.25) and the different software protocols like TAP and USP on the SMSC. If you have to send only then TAP is OK, but if you have to send and to receive then UCP is the right way. The UCP can send and receive Short Message. The easiest, but not fastest transmit and receive you can reach with a GSM modem. A GSM modem can send / receive a Short Message each 6 to 10 seconds. With a connect based on UCP you can reach 600 messages per minute.

SMS driver

For industrial applications you can not often not use ready  SMS software. You have not to think about the protocols, if you buy software drivers from third parties. That can save time and money.

SMS to fax

SMS to fax is available by a lot of GSM operators and by local third parties.

SMS to email

SMS to email is available by the GSM operators and by third parties too.

Email to SMS

Email to SMS is available by the GSM providers and by third parties. A few of them offers that serif free of charge, but with advertising on the end of the message. Such free of charge services do mostly not free of charge for commercial GSM solutions.


In the beginning of GSM it was not possible to send an SMS from GSM operator A in Germany to GSM provider B in Germany. A few companies has developed special services to bridge that. They  offer sending to “foreign” German operators. Right now  they offer a couple off other specials, that  are not supported by the local German operators.


German version