# M2M gprs modem & PPP connection **URL:** \ **Category:** Rabbit\ **Created:** [January 28, 2008, 3:16pm UTC](https://forums.digi.com/t/m2m-gprs-modem-ppp-connection/9540 "2008-01-28T15:16:48Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![joker\_cro](https://avatars.discourse-cdn.com/v4/letter/j/48db29/32.png) [@joker\_cro](https://forums.digi.com/u/joker_cro)\ **Post date:** [January 28, 2008, 3:16pm UTC](https://forums.digi.com/t/m2m-gprs-modem-ppp-connection/9540/1 "2008-01-28T15:16:48Z")
Hello! I using m2m dev kit and attempt to run sms\_ftp.c With SMS all working fine but PPP connection failing… Can anyone help me with PPP\_serial GPRS modem connection… ifconfig is: ```auto ifconfig(,IF_PPP1 IFS_PPP_INIT, IFS_PPP_SPEED, 115200L, IFS_PPP_FLOWCONTROL, 1, IFS_PPP_RTSPIN, PCDR, &PCDRShadow, 2, IFS_PPP_CTSPIN, PCDR, 3, IFS_PPP_SENDEXPECT, DIALUP_SENDEXPECT, IFS_PPP_REMOTEAUTH, DIALUP_NAME, DIALUP_PASSWORD, IFS_PPP_HANGUP, "ATH", IFS_PPP_MODEMESCAPE, 1, IFS_PPP_ACCEPTIP, 1, IFS_PPP_ACCEPTDNS, 1, IFS_DEBUG, 6, IFS_UP, IFS_END); ``` I get this: ```auto Bring up IF_PPP1 CHAT: sending 'AT' CHAT: expecting 'OK' CHAT: found it! CHAT: sending 'ATDT*99#' CHAT: expecting 'CONNECT' CHAT: found it! CHAT: end of script PPP: sending LCP config i/f 0 PPPLINK: serial errors for i/f 0: 0x2 PPP: got packet on i/f:0 protocol:0xc021 PPP: incoming packet contents: (length = 14) FF 03 C0 21 04 01 00 0A 05 06 0F A4 FA 00 ...!.......... PPP: got LCP packet code=0x04 id=1 i/f 0 PPP: LCP reject OK i/f 0 PPP: sending LCP config i/f 0 PPP: got packet on i/f:0 protocol:0xc021 PPP: incoming packet contents: (length = 22) FF 03 C0 21 02 02 00 12 01 04 02 58 02 06 00 00 ...!.......X.... 00 00 07 02 08 02 ...... PPP: got LCP packet code=0x02 id=2 i/f 0 PPP: received LCP ACK i/f 0. local_acked = 1 PPP: got packet on i/f:0 protocol:0xc021 PPP: incoming packet contents: (length = 26) FF 03 C0 21 01 01 00 16 01 04 05 DC 02 06 00 00 ...!............ 00 00 07 02 08 02 03 04 C0 23 .........# PPP: got LCP packet code=0x01 id=1 i/f 0 PPP: LCP config request i/f 0 PPP: sending LCP ACK i/f 0 PPP: sending PAP auth i/f 0 PPP: sending PAP auth i/f 0 PPP: sending PAP auth i/f 0 PPP: sending PAP auth i/f 0 PPP: PAP too many retries i/f 0 IF_PPP1: FAILED ``` Regards ---
**Author:** ![joker\_cro](https://avatars.discourse-cdn.com/v4/letter/j/48db29/32.png) [@joker\_cro](https://forums.digi.com/u/joker_cro)\ **Post date:** [January 29, 2008, 4:15pm UTC](https://forums.digi.com/t/m2m-gprs-modem-ppp-connection/9540/2 "2008-01-29T16:15:55Z")
This is more detalied listing … modem: wavecom fastrack m1206b-on RCM 3100 dev board is this a bug PPP.lib or something else? Dailup name and password 38591 but what is (…38591.3)? ```auto PPPLINK: send CTL (sans CRC) packet contents: (length = 20) FF 03 C0 23 01 03 00 10 05 33 38 35 39 31 05 33 ...#.....38591.3 38 35 39 31 8591 ``` ```auto PPPLINK: bringing up serial PPP interface 0 PPPLINK: baud rate 115200: setting divisor to 7 PPPLINK: Opened PPP serial on iface 0 at 115200 baud CHAT: sending 'ATDT*99***1#' PPPLINK: send RAW packet contents: (length = 1) 2B + PPPLINK: send RAW packet contents: (length = 1) 2B + PPPLINK: send RAW packet contents: (length = 1) 2B + CHAT: expecting 'CONNECT' PPPLINK: send RAW packet contents: (length = 14) 41 54 44 54 2A 39 39 2A 2A 2A 31 23 0D 0A ATDT*99***1#.. CHAT: found it! CHAT: end of script PPP: sending LCP config i/f 0 PPPLINK: send CTL (sans CRC) packet contents: (length = 28) FF 03 C0 21 01 01 00 18 01 04 02 58 02 06 00 00 ...!.......X.... 00 00 05 06 0F A4 FA 00 07 02 08 02 ............ PPP: got packet on i/f:0 protocol:0xc021 PPP: incoming packet contents: (length = 14) FF 03 C0 21 04 01 00 0A 05 06 0F A4 FA 00 ...!.......... PPP: got LCP packet code=0x04 id=1 i/f 0 PPP: LCP reject OK i/f 0 PPP: sending LCP config i/f 0 PPPLINK: send CTL (sans CRC) packet contents: (length = 22) FF 03 C0 21 01 02 00 12 01 04 02 58 02 06 00 00 ...!.......X.... 00 00 07 02 08 02 ...... PPP: got packet on i/f:0 protocol:0xc021 PPP: incoming packet contents: (length = 26) FF 03 C0 21 01 01 00 16 01 04 05 DC 02 06 00 00 ...!............ 00 00 07 02 08 02 03 04 C0 23 .........# PPP: got LCP packet code=0x01 id=1 i/f 0 PPP: LCP config request i/f 0 PPP: sending LCP ACK i/f 0 PPPLINK: send CTL (sans CRC) packet contents: (length = 26) FF 03 C0 21 02 01 00 16 01 04 05 DC 02 06 00 00 ...!............ 00 00 07 02 08 02 03 04 C0 23 .........# PPP: got packet on i/f:0 protocol:0xc021 PPP: incoming packet contents: (length = 22) FF 03 C0 21 02 02 00 12 01 04 02 58 02 06 00 00 ...!.......X.... 00 00 07 02 08 02 ...... PPP: got LCP packet code=0x02 id=2 i/f 0 PPP: received LCP ACK i/f 0. local_acked = 1 PPP: sending PAP auth i/f 0 PPPLINK: send CTL (sans CRC) packet contents: (length = 20) FF 03 C0 23 01 00 00 10 05 33 38 35 39 31 05 33 ...#.....38591.3 38 35 39 31 8591 PPP: sending PAP auth i/f 0 PPPLINK: send CTL (sans CRC) packet contents: (length = 20) FF 03 C0 23 01 01 00 10 05 33 38 35 39 31 05 33 ...#.....38591.3 38 35 39 31 8591 PPP: sending PAP auth i/f 0 PPPLINK: send CTL (sans CRC) packet contents: (length = 20) FF 03 C0 23 01 02 00 10 05 33 38 35 39 31 05 33 ...#.....38591.3 38 35 39 31 8591 PPP: sending PAP auth i/f 0 PPPLINK: send CTL (sans CRC) packet contents: (length = 20) FF 03 C0 23 01 03 00 10 05 33 38 35 39 31 05 33 ...#.....38591.3 38 35 39 31 8591 PPP: PAP too many retries i/f 0 ```