PAP authentication problem

[Valliappan M]

Hi,

I have bought the model MTCDP – G2 -GP with MTSMC – G2 modem.

I have problem connecting to GPRS network. From the log, it seems like it fails in the PAP authentication.

My /etc/ppp/peers/gsm file:

linkname ppp0

230400

defaultroute

replacedefaultroute

usepeerdns

ipcp-max-failure 4

ipcp-restart 10

noauth

noipdefault

crtscts

novj

connect '/usr/sbin/chat -v -t 90 -f /etc/ppp/peers/gsm_chat'

gsm_chat file:

SAY "GSM chatn"

ECHO OFF

ABORT 'NO DIAL TONE'

ABORT 'NO DIALTONE'

ABORT 'NO ANSWER'

ABORT 'NO CARRIER'

ABORT 'DELAYED'

ABORT 'VOICE'

ABORT 'BUSY'

'' 'AT'

OK 'ATZ'

OK 'AT+CSQ'

OK 'AT+CGDCONT=1,"IP","shinternet"'

SAY "Dialing...n"

OK 'ATD*99***1#'

SAY "Waiting for CONNECT...n"

TIMEOUT 120

CONNECT ''

SAY "Connectedn"

options file:

/dev/ttyS1

debug

lock

asyncmap 0

modem

user blank

show-password

pap-secrets:

# Secrets for authentication using PAP

# client	server	secret			IP addresses



blank	*	blank

Log captured by running: pppd call gsm

Sep  9 17:33:08 mtcdp daemon.notice pppd[492]: pppd 2.4.5 started by root, uid 0

Sep  9 17:33:09 mtcdp local2.info chat[495]: abort on (NO DIAL TONE)

Sep  9 17:33:09 mtcdp local2.info chat[495]: abort on (NO DIALTONE)

Sep  9 17:33:09 mtcdp local2.info chat[495]: abort on (NO ANSWER)

Sep  9 17:33:09 mtcdp local2.info chat[495]: abort on (NO CARRIER)

Sep  9 17:33:09 mtcdp local2.info chat[495]: abort on (DELAYED)

Sep  9 17:33:09 mtcdp local2.info chat[495]: abort on (VOICE)

Sep  9 17:33:09 mtcdp local2.info chat[495]: abort on (BUSY)

Sep  9 17:33:09 mtcdp local2.info chat[495]: send (AT^M)

Sep  9 17:33:09 mtcdp local2.info chat[495]: expect (OK)

Sep  9 17:33:09 mtcdp local2.info chat[495]: AT^M^M

Sep  9 17:33:09 mtcdp local2.info chat[495]: OK

Sep  9 17:33:09 mtcdp local2.info chat[495]:  -- got it

Sep  9 17:33:09 mtcdp local2.info chat[495]: send (ATZ^M)

Sep  9 17:33:09 mtcdp local2.info chat[495]: expect (OK)

Sep  9 17:33:09 mtcdp local2.info chat[495]: ^M

Sep  9 17:33:09 mtcdp local2.info chat[495]: ATZ^M^M

Sep  9 17:33:09 mtcdp local2.info chat[495]: OK

Sep  9 17:33:09 mtcdp local2.info chat[495]:  -- got it

Sep  9 17:33:09 mtcdp local2.info chat[495]: send (AT+CSQ^M)

Sep  9 17:33:09 mtcdp local2.info chat[495]: expect (OK)

Sep  9 17:33:09 mtcdp local2.info chat[495]: ^M

Sep  9 17:33:09 mtcdp local2.info chat[495]: AT+CSQ^M^M

Sep  9 17:33:09 mtcdp local2.info chat[495]: +CSQ: 99,99^M

Sep  9 17:33:09 mtcdp local2.info chat[495]: ^M

Sep  9 17:33:09 mtcdp local2.info chat[495]: OK

Sep  9 17:33:09 mtcdp local2.info chat[495]:  -- got it

Sep  9 17:33:09 mtcdp local2.info chat[495]: send (AT+CGDCONT=1,"IP","shinternet"^M)

Sep  9 17:33:10 mtcdp local2.info chat[495]: expect (OK)

Sep  9 17:33:10 mtcdp local2.info chat[495]: ^M

Sep  9 17:33:10 mtcdp local2.info chat[495]: AT+CGDCONT=1,"IP","shinternet"^M^M

Sep  9 17:33:10 mtcdp local2.info chat[495]: OK

Sep  9 17:33:10 mtcdp local2.info chat[495]:  -- got it

Sep  9 17:33:10 mtcdp local2.info chat[495]: send (ATD*99***1#^M)

Sep  9 17:33:10 mtcdp local2.info chat[495]: timeout set to 120 seconds

Sep  9 17:33:10 mtcdp local2.info chat[495]: expect (CONNECT)

Sep  9 17:33:10 mtcdp local2.info chat[495]: ^M

Sep  9 17:33:10 mtcdp local2.info chat[495]: ATD*99***1#^M^M

Sep  9 17:33:10 mtcdp local2.info chat[495]: CONNECT

Sep  9 17:33:10 mtcdp local2.info chat[495]:  -- got it

Sep  9 17:33:10 mtcdp local2.info chat[495]: send (^M)

Sep  9 17:33:10 mtcdp daemon.debug pppd[492]: Script /usr/sbin/chat -v -t 90 -f /etc/ppp/peers/gsm_chat finished (pid 494), status = 0x0

Sep  9 17:33:10 mtcdp daemon.info pppd[492]: Serial connection established.

Sep  9 17:33:10 mtcdp daemon.debug pppd[492]: using channel 13

Sep  9 17:33:10 mtcdp daemon.info pppd[492]: Using interface ppp0

Sep  9 17:33:10 mtcdp daemon.notice pppd[492]: Connect: ppp0 <--> /dev/ttyS1

Sep  9 17:33:11 mtcdp daemon.warn pppd[492]: Warning - secret file /etc/ppp/pap-secrets has world and/or group access

Sep  9 17:33:11 mtcdp daemon.debug pppd[492]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x93600a66> <pcomp> <accomp>]

Sep  9 17:33:11 mtcdp daemon.debug pppd[492]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x93600a66> <pcomp> <accomp>]

Sep  9 17:33:13 mtcdp daemon.debug pppd[492]: rcvd [LCP ConfReq id=0x1 <mru 1500> <asyncmap 0x0> <magic 0x10606170> <pcomp> <accomp> <auth pap>]

Sep  9 17:33:13 mtcdp daemon.debug pppd[492]: sent [LCP ConfAck id=0x1 <mru 1500> <asyncmap 0x0> <magic 0x10606170> <pcomp> <accomp> <auth pap>]

Sep  9 17:33:13 mtcdp daemon.warn pppd[492]: Warning - secret file /etc/ppp/pap-secrets has world and/or group access

Sep  9 17:33:13 mtcdp daemon.debug pppd[492]: sent [PAP AuthReq id=0x1 user="blank" password="blank"]

Sep  9 17:33:13 mtcdp daemon.debug pppd[492]: rcvd [LCP TermReq id=0x2]

Sep  9 17:33:13 mtcdp daemon.info pppd[492]: LCP terminated by peer

Sep  9 17:33:13 mtcdp daemon.debug pppd[492]: sent [LCP TermAck id=0x2]

Sep  9 17:33:13 mtcdp daemon.info pppd[492]: Hangup (SIGHUP)

Sep  9 17:33:13 mtcdp daemon.notice pppd[492]: Modem hangup

Sep  9 17:33:13 mtcdp daemon.notice pppd[492]: Connection terminated.

Sep  9 17:33:14 mtcdp daemon.info pppd[492]: Exit.

Btw, the same SIM card works in another vendor modem(2.5G), but network requests CHAP authentication. But with this modem i get request for PAP authentication.

Any suggestions/advice would be more helpful for me to debug further. Thanks in advance.

[Valliappan M]

Ok. Finally, I figured out why the result of AT+CSQ is important(my case was 99,99 meaning no signal). I changed the modem band from 4 to 5(1800Mhz) using AT+WMBS followed by AT+WRST to reset the modem. Now i am able to connect to my network provider and my ping was successful.

So i ended up creating a duplicate post which was same as http://www.multitech.net/developer/forums/topic.php?id=312.

Sorry guys:)

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