PDP Context setup failed, Signal strength: 99,99


#1

Environment: Beaglebone black, Debian 9.3 (stretch)

Python SDK installed without issues.

sudo hologram version
0.7.5

sudo hologram modem type
Type: Hologram Nova Global 3G/2G Cellular USB Modem (U201)

sudo hologram modem operator
Operator: None

sudo hologram modem sim
ICCID: 8944***************

sudo hologram modem signal
Signal strength: 99,99

sudo hologram modem location -v
INFO: Detected modem Nova_U201
INFO: found working port at /dev/ttyACM0
INFO: chatscript file: /usr/local/lib/python2.7/dist-packages/Hologram/Network/Modem/chatscripts/default-script
INFO: Instantiated a Nova_U201 interface with device name of /dev/ttyACM0
INFO: Setting up PDP context
ERROR: PDP Context setup failed
Location: Not Available

sudo hologram send “Hello World” -v
INFO: Detected modem Nova_U201
INFO: found working port at /dev/ttyACM0
INFO: chatscript file: /usr/local/lib/python2.7/dist-packages/Hologram/Network/Modem/chatscripts/default-script
INFO: Instantiated a Nova_U201 interface with device name of /dev/ttyACM0
RESPONSE MESSAGE: Unknown response code

sudo hologram modem connect -v
INFO: Detected modem Nova_U201
INFO: found working port at /dev/ttyACM0
INFO: chatscript file: /usr/local/lib/python2.7/dist-packages/Hologram/Network/Modem/chatscripts/default-script
INFO: Instantiated a Nova_U201 interface with device name of /dev/ttyACM0
INFO: Connecting to cell network with timeout of 200 seconds
INFO: Checking for existing PPP sessions
[ 1826.661153] PPP generic driver version 2.4.2
Failed to connect to cell network

cat /var/log/messages
Feb 20 10:14:15 arm chat[1132]: abort on (BUSY)
Feb 20 10:14:15 arm chat[1132]: abort on (NO CARRIER)
Feb 20 10:14:15 arm chat[1132]: abort on (VOICE)
Feb 20 10:14:15 arm chat[1132]: abort on (NO DIALTONE)
Feb 20 10:14:15 arm chat[1132]: abort on (NO DIAL TONE)
Feb 20 10:14:15 arm chat[1132]: abort on (NO ANSWER)
Feb 20 10:14:15 arm chat[1132]: abort on (DELAYED)
Feb 20 10:14:15 arm chat[1132]: timeout set to 12 seconds
Feb 20 10:14:15 arm chat[1132]: report (CONNECT)
Feb 20 10:14:15 arm chat[1132]: send (AT^M)
Feb 20 10:14:15 arm chat[1132]: expect (OK)
Feb 20 10:14:15 arm chat[1132]: AT^M^M
Feb 20 10:14:15 arm chat[1132]: OK
Feb 20 10:14:15 arm chat[1132]: – got it
Feb 20 10:14:15 arm chat[1132]: send (ATH^M)
Feb 20 10:14:15 arm chat[1132]: expect (OK)
Feb 20 10:14:15 arm chat[1132]: ^M
Feb 20 10:14:15 arm chat[1132]: ATH^M^M
Feb 20 10:14:15 arm chat[1132]: OK
Feb 20 10:14:15 arm chat[1132]: – got it
Feb 20 10:14:15 arm chat[1132]: send (ATZ^M)
Feb 20 10:14:15 arm chat[1132]: expect (OK)
Feb 20 10:14:15 arm chat[1132]: ^M
Feb 20 10:14:15 arm chat[1132]: ATZ^M^M
Feb 20 10:14:15 arm chat[1132]: OK
Feb 20 10:14:16 arm chat[1132]: – got it
Feb 20 10:14:16 arm chat[1132]: send (ATQ0^M)
Feb 20 10:14:16 arm chat[1132]: expect (OK)
Feb 20 10:14:16 arm chat[1132]: ^M
Feb 20 10:14:16 arm chat[1132]: ATQ0^M^M
Feb 20 10:14:16 arm chat[1132]: OK
Feb 20 10:14:16 arm chat[1132]: – got it
Feb 20 10:14:16 arm chat[1132]: send (AT+CGDCONT=1,“IP”,“hologram”^M)
Feb 20 10:14:16 arm chat[1132]: expect (OK)
Feb 20 10:14:16 arm chat[1132]: ^M
Feb 20 10:14:16 arm chat[1132]: AT+CGDCONT=1,“IP”,“hologram”^M^M
Feb 20 10:14:16 arm chat[1132]: OK
Feb 20 10:14:16 arm chat[1132]: – got it
Feb 20 10:14:16 arm chat[1132]: send (ATDT99*1#^M)
Feb 20 10:14:16 arm chat[1132]: expect (CONNECT)
Feb 20 10:14:16 arm chat[1132]: ^M
Feb 20 10:14:16 arm chat[1132]: ATDT
99***1#^M^M
Feb 20 10:14:16 arm chat[1132]: +CME ERROR: Unspecified GPRS error^M
Feb 20 10:14:28 arm chat[1132]: alarm
Feb 20 10:14:28 arm chat[1132]: Failed
Feb 20 10:14:29 arm pppd[1111]: Exit.

I’ve tried both antennas that came with the package. Any ideas?


#2

Have you verified this SIM card is working in the dashboard? Sometimes if you jump from registration to trying to ping right away we see this error. Could you screenshot your dashboard of the SIM in question?


#3

My sim card is working. I’ve tried it with a Huawei E3372 (in stick mode) without problem (can send messages to the device with the python sdk).

Its just the Nova stick thats not working.


#4

Could you tell us a bit more about your setup? Maybe share a picture of it? Other problems we’ve seen in the past are things like uncertain antenna connections (not plugged all the way in) and improperly spec’d power converters.


#5

It’s just a Beaglebone black with 2A power supply and the Nova stick (with the larger antenna) plugged in the usb port.


#6

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