Sending messages without the validated number fails

What steps will reproduce the problem?
1. Uncheck the option to use the validated number in the etting of the connector
2. Try to send a SM
3.

What is the expected output? What do you see instead?
expected result: Message sent without a number (or whatever arcor places as 
sender)
actual result: arcor.de: Kein Absender angegeben! (no sender specified)

What version of the product are you using? "Last" is not appropriate. Make
sure you tell at least which app you are using. On what operating system?
WebSMS 4.5.4, WebSMS arcor.de Connector neu 1.2

Please provide any additional information below.
This option seemed very handy as I use that arcor-account with 2 devices where 
only one has the validated number of course. For the other one I'd like to 
disable it, so that the receiver knows it's me by content but doesn't respond 
to the wrong phone accidently by user the answer-functionality of his/her phone.

Original issue reported on code.google.com by sogn...@gmail.com on 19 Apr 2013 at 12:47

rastabrane / websmsdroid

Sending messages without the validated number fails #790