Sorry to bother you again. I still have trouble sending sms with the current cvs, SIM is working properly, has been put into a phone and send correctly any sms. By the way with Siemens TC35 even changing SIM this is what I get. (correctly receives but error answering) The pdu seems correct. Any ideas? 2001-09-13 09:44:45 [5] DEBUG: AT2[/dev/com1]: <-- +CMT: ,23 2001-09-13 09:44:45 [5] DEBUG: AT2[/dev/com1]: <-- 0791934329003028040C9193438859909300001090311183020804CC27950A 2001-09-13 09:44:45 [9] DEBUG: boxc_sender: sent message to <127.0.0.1> 2001-09-13 09:44:45 [5] DEBUG: AT2[/dev/com1]: --> AT+CNMA^M 2001-09-13 09:44:45 [8] DEBUG: boxc_receiver: got ack 2001-09-13 09:44:45 [8] DEBUG: boxc_receiver: sms received 2001-09-13 09:44:45 [5] DEBUG: AT2[/dev/com1]: <-- OK 2001-09-13 09:44:45 [5] DEBUG: TP-Validity-Period: 24.0 hours 2001-09-13 09:44:45 [5] DEBUG: AT2[/dev/com1]: --> AT+CMGS=118^M 2001-09-13 09:44:45 [5] DEBUG: AT2[/dev/com1]: <-- > 2001-09-13 09:44:46 [5] DEBUG: AT2[/dev/com1]: --> 0011000C819343885990930000A776F2F4382C4F9FC3EDF2DC95A68388E9739A1EA69741CC27 950A2A83E6E534C85D6F97E569105D1E06C54065500E064ABBE965B93DCC6687E96910390C9A C3C3FA34085E9683CEE9F7382C2FB3406132A83C2FB7E1E93788F9A452413110AD06B2D940B7 1B48069A01 2001-09-13 09:44:47 [5] DEBUG: AT2[/dev/com1]: <-- > 2001-09-13 09:44:47 [5] DEBUG: AT2[/dev/com1]: --> ^Z 2001-09-13 09:44:47 [5] DEBUG: send command status: 1 2001-09-13 09:44:51 [5] DEBUG: AT2[/dev/com1]: <-- +CMGS: 55 2001-09-13 09:44:51 [5] DEBUG: AT2[/dev/com1]: <-- OK 2001-09-13 09:45:32 [5] DEBUG: AT2[/dev/com1]: <-- +CMT: ,23 2001-09-13 09:45:32 [5] DEBUG: AT2[/dev/com1]: <-- 0791934329003028040C9193438859909300001090311193700804D16A520B 2001-09-13 09:45:32 [5] DEBUG: AT2[/dev/com1]: --> AT+CNMA^M 2001-09-13 09:45:32 [9] DEBUG: boxc_sender: sent message to <127.0.0.1> 2001-09-13 09:45:32 [8] DEBUG: boxc_receiver: got ack 2001-09-13 09:45:32 [8] DEBUG: boxc_receiver: sms received 2001-09-13 09:45:32 [5] DEBUG: AT2[/dev/com1]: <-- OK 2001-09-13 09:45:32 [5] DEBUG: TP-Validity-Period: 24.0 hours 2001-09-13 09:45:32 [5] DEBUG: AT2[/dev/com1]: --> AT+CMGS=112^M 2001-09-13 09:45:32 [5] DEBUG: AT2[/dev/com1]: <-- > 2001-09-13 09:45:33 [5] DEBUG: AT2[/dev/com1]: --> 0011000C819343885990930000A770EDD639DC2ECF5D693A8898068DD165D0F8CD7ECBCB2002 881D06B1C3747ADA1D0691D3A0E17B1C6E0DDFECF00F140459CB727219240449DFF3F91B3404 1DD36136FB0D92A6E7F0B79B5C969741B1393CAC4FBF41F2F41CFE9ED3C3A0E2DC058A8182 2001-09-13 09:45:34 [5] DEBUG: AT2[/dev/com1]: <-- > 2001-09-13 09:45:34 [5] DEBUG: AT2[/dev/com1]: --> ^Z 2001-09-13 09:45:34 [5] DEBUG: send command status: 1 Andrea