Issue with LVW2 Conduit Cellular Connection

[Bryce Himebaugh]

Hello,

I am wrestling with an issue that appears to be identical to the one from this post from about a year ago.

Issue -MTCDT-LVW2-210A – Verizon serial connection terminated after second

I have preformed the steps that seemed to lead to a solution in this case. Most importantly, these commands.

AT+CGDCONT=3,”IPV4V6″,”vzwinternet” (this is the step I forgot)
AT#OTAUIDM=0

This is what I am seeing when I run AT+CGDCONT?
AT+CGDCONT?
+CGDCONT: 1,”IPV4V6″,”vzwims”,””,0,0
+CGDCONT: 2,”IPV4V6″,”vzwadmin”,””,0,0
+CGDCONT: 3,”IPV4V6″,”vzwinternet”,””,0,0
+CGDCONT: 4,”IPV4V6″,”vzwapp”,””,0,0
+CGDCONT: 5,”IPV4V6″,””,””,0,0
OK

When the conduit starts, the relevant pppd/chat messages from /var/log/messages are appended below. After about one second the connection is terminated with a SIGHUP.

My conduit has a Telit LE910-SVG modem (HW Rev 1.0) running firmware 17.01.571. I am using a Hologram sim card/service https://hologram.io/. From the Hologram.io dashboard for the sim card I am seeing a status that indicates that the conduit is connecting. For example, I give a “last active” time that is proximate to when I start the conduit.

I was wondering if someone has a thought on what I might be missing? Is it possible that the issue is with the Hologram service? Are others using this service? What services have people been successful using with the LVW2 conduit?

Thanks,

Bryce

Jun 4 08:16:41 mtcdt daemon.notice pppd[2199]: pppd 2.4.7 started by admin, uid 0 Jun 4 08:16:43 mtcdt local2.info chat[2222]: info: Attempting Basic Radio Communication Jun 4 08:16:43 mtcdt local2.info chat[2222]: send (AT^M) Jun 4 08:16:43 mtcdt local2.info chat[2222]: expect (OK) Jun 4 08:16:43 mtcdt local2.info chat[2222]: AT^M^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: OK Jun 4 08:16:43 mtcdt local2.info chat[2222]: — got it Jun 4 08:16:43 mtcdt local2.info chat[2222]: info: Checking if SIM is inserted Jun 4 08:16:43 mtcdt local2.info chat[2222]: send (AT#SIMDET?^M) Jun 4 08:16:43 mtcdt local2.info chat[2222]: expect (#SIMDET: 2,1) Jun 4 08:16:43 mtcdt local2.info chat[2222]: ^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: AT#SIMDET?^M^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: #SIMDET: 2,1 Jun 4 08:16:43 mtcdt local2.info chat[2222]: — got it Jun 4 08:16:43 mtcdt local2.info chat[2222]: info: Checking if SIM is locked Jun 4 08:16:43 mtcdt local2.info chat[2222]: send (AT+CPIN?^M) Jun 4 08:16:43 mtcdt local2.info chat[2222]: expect (READY) Jun 4 08:16:43 mtcdt local2.info chat[2222]: ^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: ^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: OK^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: AT+CPIN?^M^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: +CPIN: READY Jun 4 08:16:43 mtcdt local2.info chat[2222]: — got it Jun 4 08:16:43 mtcdt local2.info chat[2222]: info: SIM was unlocked Jun 4 08:16:43 mtcdt local2.info chat[2222]: info: Waiting for minimum signal strength Jun 4 08:16:43 mtcdt local2.info chat[2222]: send (AT+CSQ^M) Jun 4 08:16:43 mtcdt local2.info chat[2222]: expect (+CSQ: ) Jun 4 08:16:43 mtcdt local2.info chat[2222]: ^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: ^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: OK^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: AT+CSQ^M^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: +CSQ: Jun 4 08:16:43 mtcdt local2.info chat[2222]: — got it Jun 4 08:16:43 mtcdt local2.info chat[2222]: expect (99,99) Jun 4 08:16:43 mtcdt local2.info chat[2222]: 20,4^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: ^M Jun 4 08:16:43 mtcdt local2.info chat[2222]: OK^M Jun 4 08:16:44 mtcdt local2.info chat[2222]: alarm Jun 4 08:16:44 mtcdt local2.info chat[2222]: send (AT^M) Jun 4 08:16:44 mtcdt local2.info chat[2222]: expect (OK) Jun 4 08:16:44 mtcdt local2.info chat[2222]: AT^M^M Jun 4 08:16:44 mtcdt local2.info chat[2222]: OK Jun 4 08:16:44 mtcdt local2.info chat[2222]: — got it Jun 4 08:16:44 mtcdt local2.info chat[2222]: send (AT^M) Jun 4 08:16:44 mtcdt local2.info chat[2222]: abort on (NO CARRIER) Jun 4 08:16:44 mtcdt local2.info chat[2222]: abort on (BUSY) Jun 4 08:16:44 mtcdt local2.info chat[2222]: abort on (ERROR) Jun 4 08:16:44 mtcdt local2.info chat[2222]: expect (OK) Jun 4 08:16:44 mtcdt local2.info chat[2222]: ^M Jun 4 08:16:44 mtcdt local2.info chat[2222]: AT^M^M Jun 4 08:16:44 mtcdt local2.info chat[2222]: OK Jun 4 08:16:44 mtcdt local2.info chat[2222]: — got it Jun 4 08:16:44 mtcdt local2.info chat[2222]: send (AT+CSQ^M) Jun 4 08:16:44 mtcdt local2.info chat[2222]: expect (OK)
Jun 4 08:16:44 mtcdt local2.info chat[2222]: ^M
Jun 4 08:16:44 mtcdt local2.info chat[2222]: AT+CSQ^M^M
Jun 4 08:16:44 mtcdt local2.info chat[2222]: +CSQ: 20,4^M
Jun 4 08:16:44 mtcdt local2.info chat[2222]: ^M
Jun 4 08:16:44 mtcdt local2.info chat[2222]: OK
Jun 4 08:16:44 mtcdt local2.info chat[2222]: — got it
Jun 4 08:16:44 mtcdt local2.info chat[2222]: send (AT+CGDCONT=3,\”IPV4V6\”^M)
Jun 4 08:16:44 mtcdt local2.info chat[2222]: expect (OK)
Jun 4 08:16:44 mtcdt local2.info chat[2222]: ^M
Jun 4 08:16:44 mtcdt local2.info chat[2222]: AT+CGDCONT=3,”IPV4V6″^M^M
Jun 4 08:16:44 mtcdt local2.info chat[2222]: OK
Jun 4 08:16:44 mtcdt local2.info chat[2222]: — got it
Jun 4 08:16:44 mtcdt local2.info chat[2222]: send (ATDT*99***3#^M)
Jun 4 08:16:45 mtcdt local2.info chat[2222]: expect (CONNECT)
Jun 4 08:16:45 mtcdt local2.info chat[2222]: ^M
Jun 4 08:16:45 mtcdt local2.info chat[2222]: ATDT*99***3#^M^M
Jun 4 08:16:45 mtcdt local2.info chat[2222]: CONNECT
Jun 4 08:16:45 mtcdt local2.info chat[2222]: — got it
Jun 4 08:16:45 mtcdt local2.info chat[2222]: send (^M)
Jun 4 08:16:45 mtcdt daemon.info pppd[2199]: Serial connection established.
Jun 4 08:16:45 mtcdt daemon.info pppd[2199]: Using interface ppp0
Jun 4 08:16:45 mtcdt daemon.notice pppd[2199]: Connect: ppp0 <–> /dev/modem_at0
Jun 4 08:16:46 mtcdt daemon.info pppd[2199]: CHAP authentication succeeded
Jun 4 08:16:46 mtcdt daemon.notice pppd[2199]: CHAP authentication succeeded
Jun 4 08:16:46 mtcdt daemon.info pppd[2199]: Hangup (SIGHUP)
Jun 4 08:16:46 mtcdt daemon.notice pppd[2199]: Modem hangup
Jun 4 08:16:46 mtcdt daemon.notice pppd[2199]: Connection terminated.

[Author]

Posts