Hi Nick,
Almost, not quite. GSM encoding is not doing any recoding at the character
level, just at the byte level. I.e. all ASCII characters below 128 can be
represented as 7 bits and these include all the major Latin-1 or ISO-8859-1.
There are some extended characters in ISO-8859-1 (umlauts, accents etc) that
if you include even a single one it will fall back to 8bit. So sending
capitalized english chars as Greek to save SMS space, might work as long as
you stick to "Greeklish".
BR,
Nikos
----- Original Message -----
From: "Nick" <[email protected]>
To: <[email protected]>
Sent: Friday, March 27, 2009 2:38 PM
Subject: Re: kannel and greek characters
Thanks Nikos
When i set the coding to 1 or to 2 , i cant send 160 char messages anymore
There must be a way to encode the message to GSM encoding , and send 160
char messages with capital greek characters
From this URL
http://www.cardboardfish.com/support/bin/view/Main/GSMEncoding
According to GSM specification, a standard SMS message can contain up to
140 bytes of data (payload). Standard latin (ISO-8859-1) character encoding
represents a single character using 1 byte, which is 8 bits. Therefore, the
maximum number of latin 1 characters that could be included in an sms is
140.
GSM encoding represents characters using 7 bits instead of 8. This
therefore provides a maximum of 160 characters per SMS. (140 * 8 bits) / 7
bits = 160
This effectively halves the number of characters that the GSM character set
can support, compared to ISO-8859-1. In order to include common characters
that are usually represented using the 8th bit, these characters as well as
other symbol characters must be re-mapped to a combination of lower bits.
These re-mapped characters are often referred to as special characters.
This re-mapping, in combination with packing 7-bit characters into 8-bit
bytes is called GSM Encoding.
Hi Nick,
SMS can hold 160 B of 7bit chars or 140 B of 8bit chars (+/- some UDF
headers). Half of that for Unicode. ASCII characters are 7bit, Greek are
8bit. If you choose to send them as Unicode it is 70 B.
In your URL coding=0 corresponds to 7bit coding. Wrong one for Greek. Try
with coding 2 (Unicode) or coding 1 (8bit).
BR,
Nikos
----- Original Message ----- From: "Nick" <[email protected]>
To: <[email protected]>
Sent: Thursday, March 26, 2009 9:14 PM
Subject: kannel and greek characters
Hello all
I try to send greek sms 160 characters long with kannel with no luck
I can send 70 characters Unicode messages successfully, but cant send 160
char long messages
I have installed kannel on 2 linux servers, one with centos 4.6 and one
with centos 5.1
I have installed the latest version 1.4.3 and the latest cvs version
I have compiled both version with and without the greek patch bellow
http://www.kannel.org/pipermail/users/2006-July/000040.html
I have read and followed all post with keyword "greek" in both users and
developers mailing list
No luck
According the posts in the mailling list, when i send
http://192.168.0.1:13131/cgi-bin/sendsms?user=****&pass=****&to=306977000000&coding=0&text=KA%14HMEPA
(%14 = greek letter Λ)
it suppose to send the message ΚΑΛΗΜΕΡΑ
It does not.
I get ?????? or sometimes _____
I have tried countless combinations of all available query string and
config variables (coding charset alt charset etc)
Since i know that many users are using kannel and send greek characters
successfully,
i am sure am missing something, but i cant figure out what it is.
Any help will be appreciated
Thank you
