What is SMS ?
-
You can send from your phone short text letters. And this is SMS -(Short Messaging System). - -
What is SMSC ?
-
This is Short Messaging System Centre. - -
Idea is simple: when you write -your SMS, select recipient(s) and send your SMS, it's send to SMSC. -If you see "Message sent" ot something like that, don't worry. It means, -that your SMS was delivered to SMSC and SMSC try to delivery it to recipient(s). - -
Why is it done this way ? Let's say, that recipient's phone is disabled. -If it will done this way, that your phone will try to delivery it directly, -it will loose energy during each try and you have to be in network coverage -during it. GSM network makes it easier - not you, but SMSC try to delivery it. -And of course, you can decide, how long it should be done (after it SMS will -deleted). - -
What SMSC should I use ?
-
The most simple answer is: ask your operator and use its' own SMSC. - -
But sometimes it's not so simple: it's possible, that SMSC of your operator -CAN'T send SMS to some other network. You should try to use different SMSC then. -But remember: if you will try to use SMSC from different country, you have -to have activated international calls. - -
Can I use my own SMSC in roaming ?
-
Yes. - -
Can SMS contains not only text ?
-
Of course. Each SMS contains some bytes filled with contest. Normally they're -filled with chars. But of course you can decide, that they have different meaning -and send +binary data this way too... - -
In this moment we can classify SMS to: - -
-
What is length of SMS ?
-
Each SMS can contains ONLY 140 8 bit chars. When you code it as 7 bit SMS, -you can save 160 chars (you have 140*8 bits inside and they're divided into -7 bits) and when code as Unicode SMS, 70 chars (each char in such SMS contains -of 2 8 bit chars). - -
It's also possible to put into each sent SMS -special flag, which will mean: this -is first, second, third,... part of SMS. Some phones can display this info -(for example info "Linked: 1/...") or even display each SMS with such flag -as one long... Such SMS are called concatenated or linked. - -
What is price for sending SMS ?
-
Ask your operator :-) - -
Generally you pay for EACH SMS with 140 8 bit chars. It means, that -after sending Linked SMS consist of 2 such SMS, you will pay for 2. The similiar -thing is with Picture Images (each of them consist of 3 SMS) and Reminders -from Nokia 3310 (2 SMS). - -
Something it's free. When ? When you are in roaming and network, you use, -write in logs, that sent SMS, when it was send ONLY over SMSC of this network (remember: -you can you SMSC from your home network). Or when SMSC, you used, gives info -to network about error during sending, but send it correctly ! - -
What is price for receiving SMS ?
-
In many networks it's free... - -
What is SMS class ?
-
Each SMS have flag with info, what should be done with it after delivering -to recipients' phone. There are 4 possiblities (classes): - -
What is delivery time ?
-
This is the time, during it SMSC will try to delivery your SMS. - -
What is delivery raport ?
-
You can know, if your SMS was delivered to recipients' phone -(don't misguide it with reading !). It's free. There are two ways -to do it: - -
-
What it "Reply via own centre" ?
-
Theoretically, when you send SMS with flag to somebody, it should -be able to send answer over your SMSC. Often it doesn't work (many SMSC -doesn't accept SMS from forbidden networks even with this flag). - -
I have error, when answer to received SMS
-
-
What is SMS ?
+
You can send from your phone short text letters. And this is SMS +(Short Messaging System). + +
What is SMSC ?
+
This is Short Messaging System Centre. + +
Idea is simple: when you write +your SMS, select recipient(s) and send your SMS, it's send to SMSC. +If you see "Message sent" ot something like that, don't worry. It means, +that your SMS was delivered to SMSC and SMSC try to delivery it to recipient(s). + +
Why is it done this way ? Let's say, that recipient's phone is disabled. +If it will done this way, that your phone will try to delivery it directly, +it will loose energy during each try and you have to be in network coverage +during it. GSM network makes it easier - not you, but SMSC try to delivery it. +And of course, you can decide, how long it should be done (after it SMS will +deleted). + +
What SMSC should I use ?
+
The most simple answer is: ask your operator and use its' own SMSC. + +
But sometimes it's not so simple: it's possible, that SMSC of your operator +CAN'T send SMS to some other network. You should try to use different SMSC then. +But remember: if you will try to use SMSC from different country, you have +to have activated international calls. + +
Can I use my own SMSC in roaming ?
+
Yes. + +
Can SMS contains not only text ?
+
Of course. Each SMS contains some bytes filled with contest. Normally they're +filled with chars. But of course you can decide, that they have different meaning +and send +binary data this way too... + +
In this moment we can classify SMS to: + +
+
What is length of SMS ?
+
Each SMS can contains ONLY 140 8 bit chars. When you code it as 7 bit SMS, +you can save 160 chars (you have 140*8 bits inside and they're divided into +7 bits) and when code as Unicode SMS, 70 chars (each char in such SMS contains +of 2 8 bit chars). + +
It's also possible to put into each sent SMS +special flag, which will mean: this +is first, second, third,... part of SMS. Some phones can display this info +(for example info "Linked: 1/...") or even display each SMS with such flag +as one long... Such SMS are called concatenated or linked. + +
What is price for sending SMS ?
+
Ask your operator :-) + +
Generally you pay for EACH SMS with 140 8 bit chars. It means, that +after sending Linked SMS consist of 2 such SMS, you will pay for 2. The similiar +thing is with Picture Images (each of them consist of 3 SMS) and Reminders +from Nokia 3310 (2 SMS). + +
Something it's free. When ? When you are in roaming and network, you use, +write in logs, that sent SMS, when it was send ONLY over SMSC of this network (remember: +you can you SMSC from your home network). Or when SMSC, you used, gives info +to network about error during sending, but send it correctly ! + +
What is price for receiving SMS ?
+
In many networks it's free... + +
What is SMS class ?
+
Each SMS have flag with info, what should be done with it after delivering +to recipients' phone. There are 4 possiblities (classes): + +
What is delivery time ?
+
This is the time, during it SMSC will try to delivery your SMS. + +
What is delivery raport ?
+
You can know, if your SMS was delivered to recipients' phone +(don't misguide it with reading !). It's free. There are two ways +to do it: + +
+
What it "Reply via own centre" ?
+
Theoretically, when you send SMS with flag to somebody, it should +be able to send answer over your SMSC. Often it doesn't work (many SMSC +doesn't accept SMS from forbidden networks even with this flag). + +
I have error, when answer to received SMS
+
+