diff -r 149b604c319b -r 93a75e48819c data/dictionary.xml
--- a/data/dictionary.xml Sun Aug 11 13:42:41 2013 +0200
+++ b/data/dictionary.xml Sun Aug 11 15:48:08 2013 +0200
@@ -43,6 +43,7 @@
+ a technique used in charging;
for pre-paid subscribers the standard way to charge services is online
– subscriber's balance is checked in the billing system and if sufficient, the service (e.g. sending a SMS) is provided, otherwise the service is denied;
if the billing system is not currently available (so we can't say if the subscriber's balance is high enough), we can provide the service anyway and try to charge it later;
@@ -110,16 +111,21 @@
-
+
+
+
+ a kind of electronic communication between two persons or a group chat;
+ compared to e-mail, IM messages are short (few words, sentence) and the other side is expected (depending on his/her online status) to read and respond it immediately;
+ compared to SMS, IM messages are cheap – typically free of charge;
+ important IM feature is presence – the sender knows current status of the recipient: online, offline, away, busy etc.;
+ IM is rooted in the computer world but nowadays it is often used also on mobile phones as alternative to (expensive) SMS – in such case it is called OTT and requires mobile Internet connectivity;
+ IM messages are usually transferred over an TCP/IP protocol – good example is Jabber/XMPP which is free and open protocol for IM and presence based on XML
+
+
computer
messaging
-
-
- messaging
-
-