Hello members of this mailing-list, I have a strange problem with the Sierra Wireless MC7710 module. I use a Buildroot-Linux on an Atmel AT91SAM9G20 processor and on USB connected the MC7710. The Kernel-version is 3.6.8. I added the device-ID of the MC7710 to the sierra.ko-driver and tried to connect to the internet with pppd 2.4.5 and 2.4.4. I tried also the qcserial.ko driver. I tried many different pppd-configs and 2 MC7710 modules. I get always the same result: Dial-in, CHAP-authentification and LCP handshake works but IPCP-Nak messages are always empty. After that I also cannot stop the communication. The disconnect-script has no effekt. The one and only way to make AT-commands useable at ttyUSB2 is to switch off the modem and switch it on again. I tested with two SIM-cards, one Simyo-card (telephone-contract in the german e-plus phone-net) and one T-Mobile-card (Just-Internet-contract in the Deutsche Telekom phone-net). Both cards are working in my mobile phone but with both cards I have the same result in the above mentioned configuration. What do I make wrong? Can the MC7710 connect via AT-interface? Do I need a different firmware? How can I install a new firmware in Linux? Or does it working just with the QMI-WWAN driver via the /dev/cdc-wdm file? To make the libqmi useable makes a lot of work since I need some other libs as prerequisite for this. At this moment they are not included in the buildroot-project. Here is some printout of the AT-communication AT!UDINFO? VID: 0x1199 PID: 0x68A2 Interface: QMI Manufacturer: Sierra Wireless, Incorporated Product: MC7710 OK AT+CPINC? +CPINC: 3,3,10,10 OK AT+CPIN=0000 // pin is manipulated here ;-) OK ATI Manufacturer: Sierra Wireless, Incorporated Model: MC7710 Revision: SWI9200X_03.00.11.00AP R4152 CARMD-EN-10527 2011/12/20 14:52:19 IMEI: 358178040223994 IMEI SV: 8 FSN: CCQ1512141610 3GPP Release 8 +GCAP: +CGSM,+DS,+ES OK AT!GSTATUS? !GSTATUS: Current Time: 205 Temperature: 26 Bootup Time: 1 Mode: ONLINE System mode: WCDMA PS state: Attached WCDMA band: WCDMA 2100 WCDMA channel: 10812 GMM (PS) state:REGISTERED NORMAL SERVICE MM (CS) state: IDLE NORMAL SERVICE WCDMA L1 State:L1M_PCH_SLEEP RRC State: DISCONNECTED RX level C0: -61 LAC: 4887 (18567) RX level C1: -106 Cell ID: 000F97FB (1021947) OK AT+CSQ +CSQ: 28,99 OK AT&V &C: 1; &D: 2; &E: 0; &F: 0; &S: 0; &W: 0; E: 1; L: 0; M: 0; Q: 0; V: 1; X: 1; Z: 0; \Q: 3; \S: 0; \V: 0; O: 0; S0: 0; S2: 43; S3: 13; S4: 10; S5: 8; S6: 2; S7: 0; S8: 2; S9: 6; S10: 14; S11: 95; S30: 0; S103: 1; S104: 1; +FCLASS: 0; +ICF: 3,3; +IFC: 2,2; +IPR: 115200; +DR: 0; +DS: 0,0,2048,6; +CMEE: 2; +WS46: 12; +CFUN:; +CBST: 0,0,1; +CRLP: (61,61,48,6,0),(61,61,48,6,1),(240,240,52,6,2); +CV120: 1,1,1,0,0,0; +CHSN: 0,0,0,0; +CSSN: 0,0; +CREG: 0; +CGREG: 0; +CEREG: 0; +CSCS: "IRA"; +CSTA: 129; +CR: 0; +CRC: 0; +CGDCONT: (1,"IP","internet.t-mobile","0.0.0.0",0,0); +CGDSCONT: ; +CGTFT: ; +CGEQREQ: ; +CGEQMIN: ; +CGEQOS: ; +CGQREQ: ; +CGQMIN: ; +CGEREP: 0,0; +CGDATA: "PPP"; +CGCLASS: "A"; +CGSMS: 3; +CSMS: 0; +CMGF: 0; +CSAS: 0; +CRES: 0; +CSCA: "+491710760000",145; +CSMP: ,,0,0; +CSDH: 0; +CSCB: 0,"",""; +FDD: 0; +FAR: 0; +FCL: 0; +FIT: 0,0; +ES: ,,; +ESA: 0,,,,0,0,255,; +CMOD: 0; +CEMODE: 0; +CVHU: 0; +CPIN: ÿÿÿÿÿÿÿÿ,ÿÿÿÿÿÿÿÿ; +CMEC: 0,0,0,0; +CIND: 0,0,1,0,0,0,1,0; +CMER: 0,0,0,0,0; +CGATT: 1; +CGACT: 0; +CPBS: "SM"; +CPMS: "SM","SM","SM"; +CNMI: 0,0,0,0,0; +CMMS: 0; +FTS: 0; +FRS: 0; +FTH: 3; +FRH: 3; +FTM: 96; +FRM: 96; +CCUG: 0,0,0; +COPS: 0,0,""; +CUSD: 0; +CAOC: 1; +CCWA: 0; +CCLK: ""; +CPOL: 0,2,"",0,0,0,0; +CPLS: +0; +CTZR: 0; +CTZU: 0; +CLIP: 0; +COLP: 0; +CDIP: 0; +CLIR: 0; +CMUX: 0,0,5,31,10,3,30,10,2; !CMUX: 0,0,5,31,10,3,30,10,2 OK Here is the printout of the messages-file in this case with the sierra.ko driver, qcserial driver is quiet similar except that I get just 3 ttyUSB-devices instead of 4 Mar 4 12:47:43 headend kern.info kernel: usbcore: registered new interface driver usbfs Mar 4 12:47:43 headend kern.info kernel: usbcore: registered new interface driver hub Mar 4 12:47:43 LANIOS kern.info kernel: usbcore: registered new device driver usb Mar 4 12:47:43 headend kern.info kernel: ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver Mar 4 12:47:43 headend kern.info kernel: at91_ohci at91_ohci: AT91 OHCI Mar 4 12:47:43 headend kern.info kernel: at91_ohci at91_ohci: new USB bus registered, assigned bus number 1 Mar 4 12:47:43 headend kern.info kernel: at91_ohci at91_ohci: irq 36, io mem 0x00500000 Mar 4 12:47:43 headend kern.info kernel: hub 1-0:1.0: USB hub found Mar 4 12:47:43 headend kern.info kernel: hub 1-0:1.0: 2 ports detected Mar 4 12:47:43 LANIOS kern.info kernel: usbcore: registered new interface driver usbserial Mar 4 12:47:43 LANIOS kern.info kernel: usbserial: USB Serial Driver core Mar 4 12:47:43 headend kern.info kernel: usbcore: registered new interface driver sierra Mar 4 12:47:43 LANIOS kern.info kernel: USB Serial support registered for Sierra USB modem Mar 4 12:49:05 LANIOS kern.info kernel: usb 1-1: new full-speed USB device number 2 using at91_ohci Mar 4 12:49:06 headend kern.warn kernel: usb 1-1: config 1 has an invalid interface number: 8 but max is 3 Mar 4 12:49:06 headend kern.warn kernel: usb 1-1: config 1 has no interface number 1 Mar 4 12:49:06 LANIOS kern.info kernel: sierra 1-1:1.0: Sierra USB modem converter detected Mar 4 12:49:11 headend kern.info kernel: usb 1-1: Sierra USB modem converter now attached to ttyUSB0 Mar 4 12:49:11 headend kern.info kernel: sierra 1-1:1.2: Sierra USB modem converter detected Mar 4 12:49:11 LANIOS kern.info kernel: usb 1-1: Sierra USB modem converter now attached to ttyUSB1 Mar 4 12:49:11 LANIOS kern.info kernel: sierra 1-1:1.3: Sierra USB modem converter detected Mar 4 12:49:11 headend kern.info kernel: usb 1-1: Sierra USB modem converter now attached to ttyUSB2 Mar 4 12:49:11 LANIOS kern.info kernel: sierra 1-1:1.8: Sierra USB modem converter detected Mar 4 12:49:11 LANIOS kern.info kernel: usb 1-1: Sierra USB modem converter now attached to ttyUSB3 Mar 4 13:16:57 headend kern.info kernel: PPP generic driver version 2.4.2 Mar 4 13:16:58 LANIOS daemon.info pppd[729]: pppd options in effect: Mar 4 13:16:58 LANIOS daemon.info pppd[729]: debug # (from /etc/ppp/peers/tmobile) Mar 4 13:16:58 LANIOS daemon.info pppd[729]: persist # (from /etc/ppp/peers/tmobile) Mar 4 13:16:58 LANIOS daemon.info pppd[729]: dump # (from /etc/ppp/peers/tmobile) Mar 4 13:16:58 LANIOS daemon.info pppd[729]: noauth # (from /etc/ppp/peers/tmobile) Mar 4 13:16:58 LANIOS daemon.info pppd[729]: /dev/ttyUSB2 # (from /etc/ppp/peers/tmobile) Mar 4 13:16:58 LANIOS daemon.info pppd[729]: 115200 # (from /etc/ppp/peers/tmobile) Mar 4 13:16:58 LANIOS daemon.info pppd[729]: connect /usr/sbin/chat -v -f /etc/ppp/chatscripts/tmobile # (from /etc/ppp/peers/tmobile) Mar 4 13:16:58 LANIOS daemon.info pppd[729]: disconnect /usr/sbin/chat -v -f /etc/ppp/chatscripts/tmobile-disconnect # (from /etc/ppp/peers/tmobile) Mar 4 13:16:58 LANIOS daemon.info pppd[729]: mru 1500 # (from /etc/ppp/peers/tmobile) Mar 4 13:16:58 LANIOS daemon.info pppd[729]: mtu 1500 # (from /etc/ppp/peers/tmobile) Mar 4 13:16:59 LANIOS local2.info chat[742]: timeout set to 10 seconds Mar 4 13:16:59 LANIOS local2.info chat[742]: abort on (BUSY) Mar 4 13:16:59 LANIOS local2.info chat[742]: abort on (NO ANSWER) Mar 4 13:16:59 LANIOS local2.info chat[742]: abort on (ERROR) Mar 4 13:16:59 LANIOS local2.info chat[742]: send (ATZ^M) Mar 4 13:16:59 LANIOS local2.info chat[742]: expect (OK) Mar 4 13:16:59 LANIOS local2.info chat[742]: ATZ^M^M Mar 4 13:16:59 LANIOS local2.info chat[742]: OK Mar 4 13:16:59 LANIOS local2.info chat[742]: -- got it Mar 4 13:16:59 LANIOS local2.info chat[742]: send (AT+CGDCONT=1,"IP","internet.t-mobile"^M) Mar 4 13:16:59 LANIOS local2.info chat[742]: abort on (NO CARRIER) Mar 4 13:16:59 LANIOS local2.info chat[742]: expect (OK) Mar 4 13:16:59 LANIOS local2.info chat[742]: ^M Mar 4 13:16:59 LANIOS local2.info chat[742]: AT+CGDCONT=1,"IP","internet.t-mobile"^M^M Mar 4 13:16:59 LANIOS local2.info chat[742]: OK Mar 4 13:16:59 LANIOS local2.info chat[742]: -- got it Mar 4 13:16:59 LANIOS local2.info chat[742]: send (ATD*99***1#^M) Mar 4 13:17:00 LANIOS local2.info chat[742]: expect (CONNECT) Mar 4 13:17:00 LANIOS local2.info chat[742]: ^M Mar 4 13:17:00 LANIOS local2.info chat[742]: ATD*99***1#^M^M Mar 4 13:17:00 LANIOS local2.info chat[742]: CONNECT Mar 4 13:17:00 LANIOS local2.info chat[742]: -- got it Mar 4 13:17:00 LANIOS local2.info chat[742]: send (^M) Mar 4 13:17:00 LANIOS daemon.debug pppd[736]: Script /usr/sbin/chat -v -f /etc/ppp/chatscripts/tmobile finished (pid 741), status = 0x0 Mar 4 13:17:00 LANIOS daemon.info pppd[736]: Serial connection established. Mar 4 13:17:00 LANIOS daemon.debug pppd[736]: using channel 1 Mar 4 13:17:00 LANIOS daemon.info pppd[736]: Using interface ppp0 Mar 4 13:17:00 LANIOS daemon.notice pppd[736]: Connect: ppp0 <--> /dev/ttyUSB2 Mar 4 13:17:01 LANIOS daemon.warn pppd[736]: Warning - secret file /etc/ppp/pap-secrets has world and/or group access Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x21849719> <pcomp> <accomp>] Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: rcvd [LCP ConfReq id=0x0 <asyncmap 0x0> <auth chap MD5> <magic 0x25b3fde> <pcomp> <accomp>] Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: sent [LCP ConfAck id=0x0 <asyncmap 0x0> <auth chap MD5> <magic 0x25b3fde> <pcomp> <accomp>] Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x21849719> <pcomp> <accomp>] Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: sent [LCP EchoReq id=0x0 magic=0x21849719] Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: rcvd [LCP DiscReq id=0x1 magic=0x25b3fde] Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: rcvd [CHAP Challenge id=0x1 <20ef5cafd07757fe247b7b202489d18a>, name = "UMTS_CHAP_SRVR"] Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: sent [CHAP Response id=0x1 <b122c7c567e774519db926ad4e785617>, name = "LANIOS"] Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: rcvd [LCP EchoRep id=0x0 magic=0x25b3fde 21 84 97 19] Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: rcvd [CHAP Success id=0x1 ""] Mar 4 13:17:01 LANIOS daemon.info pppd[736]: CHAP authentication succeeded Mar 4 13:17:01 LANIOS daemon.notice pppd[736]: CHAP authentication succeeded Mar 4 13:17:01 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:02 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x1] Mar 4 13:17:02 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x2 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:03 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x2] Mar 4 13:17:03 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x3 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:04 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x3] Mar 4 13:17:04 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x4 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:05 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x4] Mar 4 13:17:05 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x5 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:06 LANIOS daemon.debug pppd[736]: sent [LCP EchoReq id=0x1 magic=0x21849719] Mar 4 13:17:06 LANIOS daemon.debug pppd[736]: rcvd [LCP EchoRep id=0x1 magic=0x25b3fde 21 84 97 19] Mar 4 13:17:06 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x5] Mar 4 13:17:06 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x6 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:07 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x6] Mar 4 13:17:07 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x7 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:08 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x7] Mar 4 13:17:08 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x8 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:09 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x8] Mar 4 13:17:09 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x9 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:10 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x9] Mar 4 13:17:10 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0xa <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:11 LANIOS daemon.debug pppd[736]: sent [LCP EchoReq id=0x2 magic=0x21849719] Mar 4 13:17:11 LANIOS daemon.debug pppd[736]: rcvd [LCP EchoRep id=0x2 magic=0x25b3fde 21 84 97 19] Mar 4 13:17:11 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0xa] Mar 4 13:17:11 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0xb <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:12 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0xb] Mar 4 13:17:12 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0xc <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:13 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0xc] Mar 4 13:17:13 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0xd <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:14 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0xd] Mar 4 13:17:14 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0xe <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:15 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0xe] Mar 4 13:17:15 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0xf <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:16 LANIOS daemon.debug pppd[736]: sent [LCP EchoReq id=0x3 magic=0x21849719] Mar 4 13:17:16 LANIOS daemon.debug pppd[736]: rcvd [LCP EchoRep id=0x3 magic=0x25b3fde 21 84 97 19] Mar 4 13:17:16 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0xf] Mar 4 13:17:16 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x10 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:17 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x10] Mar 4 13:17:17 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x11 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:18 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x11] Mar 4 13:17:18 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x12 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:19 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x12] Mar 4 13:17:19 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:20 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x13] Mar 4 13:17:20 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x14 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:21 LANIOS daemon.debug pppd[736]: sent [LCP EchoReq id=0x4 magic=0x21849719] Mar 4 13:17:21 LANIOS daemon.debug pppd[736]: rcvd [LCP EchoRep id=0x4 magic=0x25b3fde 21 84 97 19] Mar 4 13:17:21 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x14] Mar 4 13:17:21 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x15 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:22 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x15] Mar 4 13:17:22 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x16 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:23 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x16] Mar 4 13:17:23 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x17 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:24 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x17] Mar 4 13:17:24 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x18 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:25 LANIOS daemon.debug pppd[736]: rcvd [IPCP ConfNak id=0x18] Mar 4 13:17:25 LANIOS daemon.debug pppd[736]: sent [IPCP ConfReq id=0x19 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] Mar 4 13:17:26 LANIOS daemon.debug pppd[736]: sent [LCP EchoReq id=0x5 magic=0x21849719] Mar 4 13:17:26 LANIOS daemon.debug pppd[736]: rcvd [LCP EchoRep id=0x5 magic=0x25b3fde 21 84 97 19] lsusb (of busybox) will not help, a verbose mode is not available: Bus 001 Device 002: ID 1199:68a2 Bus 001 Device 001: ID 1d6b:0001 Has anyone any idea, why I get no IP or what I must change to let it work? kind regards Andreas Schigold |