+CMS ERROR 512 with Wavecom

Andreas Fink <[email protected]>
Newsgroups gmane.comp.mobile.kannel.devel
Message-ID <[email protected]> 
anyone have a clue why I get this error 512?
Its a wavecom modem. Incoming messages do work and get routed correctly. SIM is O2 in UK.
The devices worked with the same setting with other SIM cards.
The SIM works in a phone sending SMS.

2013-03-20 21:12:24 [1190] [6] DEBUG: AT2[port02]: send command status: 1
2013-03-20 21:12:24 [1190] [6] DEBUG: AT2[port02]: --> 0011000B911487667733F30000A706F0B79C0E9301
2013-03-20 21:12:24 [1190] [6] DEBUG: AT2[port02]: --> ^Z
2013-03-20 21:12:24 [1190] [6] DEBUG: AT2[port02]: <-- >
2013-03-20 21:12:24 [1190] [6] DEBUG: AT2[port02]: <-- +CMS ERROR: 512
2013-03-20 21:12:24 [1190] [6] ERROR: AT2[port02]: +CMS ERROR: +CMS ERROR: 512
2013-03-20 21:12:24 [1190] [6] ERROR: AT2[port02]: +CMS ERROR: User abort or MM establishment failure (SMS) (512)
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