How to add new line character in sms using gammu/wammu

Question

I have made a custom script in PHP and I am using gammu/wammu to send sms, but I am unable to figure out how to add new line character in SMS.

I have tried

• \n
• \r
• \t
• 0x0a
• 0x0d
• &10;

but none of these worked.

Answer 1

Have you tried \r\n? It looks to me like SMS needs both a Carriage Return and Line Feed. Another place I looked at said to use %0a%0d, which may work, but it seems to be their service rather than everything. I'd give it a try though. Either way, you need to make sure that the 0x0A and 0x0D (two characters in hex) get passed to the service sending the SMS.

See here for the site I mentioned that said %0a%0d, it also has a chart of the SMS character set.

Answer 2

I can't get this to work in gammu-smsd either, I really need to be able to send a true newline bytecode in an sms as well. I've googled for days, searched the gammu codebase. I can't tell if/where it's being trapped but nomatter how I enter in into my sqlite3 gammu-smsd, it's not a newline that comes out at the other end (machine2machine sms).

I don't need a CR/LF, I just need to send a template with \n after a variable string template, using it in an sms based tracker

Update, I figured out a way to make it send what I want. Since I'm using an sqlite3 database with gammu, this little PHP program makes me send the message to the mobile asset and it gets accepted there:

$sms_template=<<<EOD
insert into outbox ( TextDecoded , DestinationNumber, DeliveryReport, CreatorID) values ('%s','%s','yes','auto');
EOD;
$number=1243456;
$terminator=sprintf("%s",chr(10));
$db = new SQLite3("/var/spool/gammu/smsd.sqlite");
$sms='SRV=12171%s';
$sql=sprintf($sms_template, sprintf($sms, $terminator), $number);
$db->exec($sql);

That actually stores the sms fine in the outbox and a true newline arrives at the destination. Really hope this helps someone. This code is stripped from private stuff, might not work exactly as displayed, but I use a script alike that works.

Glenn

Answer 3

Even though this question was asked ages ago, i thought i might add this as a reference.

Through my testing i found that it depends on the quotes you use. Use " (double quotes) instead of single for it to format the message properly and use \n or \r.

Hope this helps.

Cheers :)

Answer 4

Maybe quite late with an answer but as a reference that worked perfectly for me:

echo -e "Hello\nWorld" | gammu ....