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12 <center><font color="#1F409F" size=+2 class="tytul">SMS FAQ</font></center>
14 <p><hr size="2" noshade width="60%" align="center" style="color: #004080">
16 <p><font color="#1F409F" size=+2 class="dzial">What is SMS ?</font><br>
17 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
19 <p>You can send from your phone short text letters. And this is SMS
20 (Short Messaging System).
22 <p><font color="#1F409F" size=+2 class="dzial">What is SMSC ?</font><br>
23 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
25 <p>This is Short Messaging System Centre.
27 <p>Idea is simple: when you write
28 your SMS, select recipient(s) and send your SMS, it's send to SMSC.
29 If you see "Message sent" ot something like that, don't worry. It means,
30 that your SMS was delivered to SMSC and SMSC try to delivery it to recipient(s).
32 <p>Why is it done this way ? Let's say, that recipient's phone is disabled.
33 If it will done this way, that your phone will try to delivery it directly,
34 it will loose energy during each try and you have to be in network coverage
35 during it. GSM network makes it easier - not you, but SMSC try to delivery it.
36 And of course, you can decide, how long it should be done (after it SMS will
39 <p><font color="#1F409F" size=+2 class="dzial">What SMSC should I use ?</font><br>
40 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
42 <p>The most simple answer is: ask your operator and use its' own SMSC.
44 <p>But sometimes it's not so simple: it's possible, that SMSC of your operator
45 CAN'T send SMS to some other network. You should try to use different SMSC then.
46 But remember: if you will try to use SMSC from different country, you have
47 to have activated international calls.
49 <p><font color="#1F409F" size=+2 class="dzial">Can I use my own SMSC in roaming ?</font><br>
50 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
54 <p><font color="#1F409F" size=+2 class="dzial">Can SMS contains not only text ?</font><br>
55 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
57 <p>Of course. Each SMS contains some bytes filled with contest. Normally they're
58 filled with chars. But of course you can decide, that they have different meaning
59 and send +binary data this way too...
61 <p>In this moment we can classify SMS to:
65 <li>7 bit SMS - you can put each of 127 chars into it</li>
66 <li>Unicode SMS - you can each of 65550 chars into it</li>
67 <li>binary data SMS - ringtone, picture, etc.</li>
70 <p><font color="#1F409F" size=+2 class="dzial">What is length of SMS ?</font><br>
71 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
73 <p>Each SMS can contains ONLY 140 8 bit chars. When you code it as 7 bit SMS,
74 you can save 160 chars (you have 140*8 bits inside and they're divided into
75 7 bits) and when code as Unicode SMS, 70 chars (each char in such SMS contains
78 <p>It's also possible to put into each sent SMS
79 special flag, which will mean: this
80 is first, second, third,... part of SMS. Some phones can display this info
81 (for example info "Linked: 1/...") or even display each SMS with such flag
82 as one long... Such SMS are called concatenated or linked.
84 <p><font color="#1F409F" size=+2 class="dzial">What is price for sending SMS ?</font><br>
85 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
87 <p>Ask your operator :-)
89 <p>Generally you pay for EACH SMS with 140 8 bit chars. It means, that
90 after sending Linked SMS consist of 2 such SMS, you will pay for 2. The similiar
91 thing is with Picture Images (each of them consist of 3 SMS) and Reminders
92 from Nokia 3310 (2 SMS).
94 <p>Something it's free. When ? When you are in roaming and network, you use,
95 write in logs, that sent SMS, when it was send ONLY over SMSC of this network (remember:
96 you can you SMSC from your home network). Or when SMSC, you used, gives info
97 to network about error during sending, but send it correctly !
99 <p><font color="#1F409F" size=+2 class="dzial">What is price for receiving SMS ?</font><br>
100 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
102 <p>In many networks it's free...
104 <p><font color="#1F409F" size=+2 class="dzial">What is SMS class ?</font><br>
105 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
107 <p>Each SMS have flag with info, what should be done with it after delivering
108 to recipients' phone. There are 4 possiblities (classes):
111 <LI>Class 0: displayed immedietaly after receiving
112 in display of SMS recipient</li>
114 <LI>Class 2: saved in SIM card of recipient</li>
118 <p><font color="#1F409F" size=+2 class="dzial">What is delivery time ?</font><br>
119 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
121 <p>This is the time, during it SMSC will try to delivery your SMS.
123 <p><font color="#1F409F" size=+2 class="dzial">What is delivery raport ?</font><br>
124 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
126 <p>You can know, if your SMS was delivered to recipients' phone
127 (don't misguide it with reading !). It's free. There are two ways
132 <li>enable such option in your phone. Of course, it will work
133 only, when used SMSC will accept this feature</li>
134 <li>write special text on the start of SMS. It can be different for
138 <p><font color="#1F409F" size=+2 class="dzial">What it "Reply via own centre" ?</font><br>
139 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
141 <p>Theoretically, when you send SMS with flag to somebody, it should
142 be able to send answer over your SMSC. Often it doesn't work (many SMSC
143 doesn't accept SMS from forbidden networks even with this flag).
145 <p><font color="#1F409F" size=+2 class="dzial">I have error, when answer to received SMS</font><br>
146 <hr align="LEFT" size="3" width="300" color="#60c0a0" noshade>
150 <li>you don't have correct SMSC in phone</li>
151 <li>person, who sent SMS to you, marked "Reply via own center" option.
152 Try to send SMS over your own SMSC</li>
153 <li>you can't send SMS (don't have it activated in your operator)</li>