BG2 with pppd hang-ups | Telit Cinterion IoT Developer Community
March 13, 2015 - 4:21pm, 2438 views
i was observing a strange effect. We have about 25 BG2 modems in field. The host is a linux system running pppd (version 2.4.5). The modem should be always connected; the pppd is configured with persistent (see below my configurations).
We have got recently some complains from the field, that the communication stops working and only disconnecting the modem from the power supply and connecting it back readable the communication. This happens sometime once a month, sometime 2-4 ***** a week.
I have analyzed the pppd log and found out that the modem dose not answer at a certain point in time:
- The LCP Echo Req is not answered anymore
- pppd try to redial, but the modem dose not answer the AT commands any more
Did anybody face a similar problem?
My pppd options:
connect "/usr/sbin/chat -vf /etc/chatscripts/icb"
The chatscript :
ABORT 'NO CARRIER'
Thanks for you help,
I haven't seen such problem.
Can you write which module's interface you are using and what configuration is used for the connection.
Please also write how is the module configured (AT&V and at^scfg reply).
Do you have any detailed log for that situation?
Have you tried to change the LCP echo parameters?
Have you tried to connect to the module manually when this happens and try to issue commands?
If you have diagnosed and proved the problem, maybe it would be the best to report this to the local technical support. Then the problem would be analysed and reproduction attempt would be made.