MTCAP duration for cellular connection

[towo]

Hello,

we are using an MTCAP-L4E1-868 with a common Simcard. We are loosing sometimes our connection and the Conduit tries to reconnect immediately. Our provider told us that such a reconnect should work within a few seconds. On our devices it takes about 3 minutes. Is there any possiblity how to get this done faster?

It seems that the “cellular registration check” takes almost 2 minutes..


020-02-27T21:06:48.655952+00:00 mtcap pppd[4222]: Connection terminated.
2020-02-27T21:06:49.666629+00:00 mtcap pppd[4222]: Script /etc/ppp/ip-down finished (pid 31172), status = 0x0
2020-02-27T21:07:00.331271+00:00 mtcap after-switch-inet: calling ddns checkip
2020-02-27T21:07:01.117955+00:00 mtcap after-switch-inet: triggering WANFAILOVER alert
2020-02-27T21:07:01.295724+00:00 mtcap after-switch-inet: restarting annex client
2020-02-27T21:07:01.702636+00:00 mtcap after-switch-inet: restarting mts-reverse-ssh
2020-02-27T21:07:02.886479+00:00 mtcap after-switch-inet: done.
2020-02-27T21:07:12.939577+00:00 mtcap TUNNEL_MNGR: [TUNNEL_MNGR] MANAGING TUNNELS
2020-02-27T21:07:13.721945+00:00 mtcap TUNNEL_MNGR: [TUNNEL_MNGR] WAN Not Acquired. Tunnels will not be setup until WAN is available.
2020-02-27T21:07:13.722196+00:00 mtcap TUNNEL_MNGR: [TUNNEL_MNGR] v_apFqdnMonitor size 0
2020-02-27T21:07:18.686878+00:00 mtcap pppd[4222]: Last modem reset was 6781 seconds ago
2020-02-27T21:07:19.971993+00:00 mtcap ppp_pre_chat: Configuring PDP context.
2020-02-27T21:07:21.402619+00:00 mtcap ppp_pre_chat: SIM init started
2020-02-27T21:07:21.673501+00:00 mtcap ppp_pre_chat: Quering SIM status
2020-02-27T21:07:21.961085+00:00 mtcap ppp_pre_chat: Checking if SIM is inserted
2020-02-27T21:07:22.198612+00:00 mtcap ppp_pre_chat: Checking if SIM is locked
2020-02-27T21:07:22.446933+00:00 mtcap ppp_pre_chat: SIM was unlocked
2020-02-27T21:07:22.519600+00:00 mtcap ppp_pre_chat: Cellular registration check started
2020-02-27T21:09:14.813125+00:00 mtcap ppp_pre_chat: Cellular signal quality check started
2020-02-27T21:09:15.074375+00:00 mtcap ppp_pre_chat: Cellular auth method init started
2020-02-27T21:09:15.253523+00:00 mtcap ppp_pre_chat: Configuring the module for CHAP Authentication
2020-02-27T21:09:15.394302+00:00 mtcap ppp_pre_chat: Initialization finished.
2020-02-27T21:09:15.426531+00:00 mtcap chat[31878]: send (AT^M)
2020-02-27T21:09:15.491635+00:00 mtcap chat[31878]: expect (OK)
2020-02-27T21:09:15.493366+00:00 mtcap chat[31878]: AT^M^M
2020-02-27T21:09:15.495476+00:00 mtcap chat[31878]: OK
2020-02-27T21:09:15.497372+00:00 mtcap chat[31878]: -- got it
2020-02-27T21:09:15.498922+00:00 mtcap chat[31878]: send (AT^M)
2020-02-27T21:09:15.562090+00:00 mtcap chat[31878]: abort on (NO CARRIER)
2020-02-27T21:09:15.562390+00:00 mtcap chat[31878]: abort on (BUSY)
2020-02-27T21:09:15.562647+00:00 mtcap chat[31878]: abort on (ERROR)
2020-02-27T21:09:15.562909+00:00 mtcap chat[31878]: expect (OK)
2020-02-27T21:09:15.563226+00:00 mtcap chat[31878]: ^M
2020-02-27T21:09:15.567309+00:00 mtcap chat[31878]: AT^M^M
2020-02-27T21:09:15.568138+00:00 mtcap chat[31878]: OK
2020-02-27T21:09:15.577526+00:00 mtcap chat[31878]: -- got it
2020-02-27T21:09:15.578727+00:00 mtcap chat[31878]: send (AT+CSQ^M)
2020-02-27T21:09:15.725557+00:00 mtcap chat[31878]: expect (OK)
2020-02-27T21:09:15.727381+00:00 mtcap chat[31878]: ^M
2020-02-27T21:09:15.729234+00:00 mtcap chat[31878]: AT+CSQ^M^M
2020-02-27T21:09:15.731453+00:00 mtcap chat[31878]: +CSQ: 19,7^M
2020-02-27T21:09:15.734249+00:00 mtcap chat[31878]: ^M
2020-02-27T21:09:15.736202+00:00 mtcap chat[31878]: OK
2020-02-27T21:09:15.737821+00:00 mtcap chat[31878]: -- got it
2020-02-27T21:09:15.739029+00:00 mtcap chat[31878]: send (ATDT*99***1#^M)
2020-02-27T21:09:16.007217+00:00 mtcap chat[31878]: expect (CONNECT)
2020-02-27T21:09:16.009486+00:00 mtcap chat[31878]: ^M
2020-02-27T21:09:16.018393+00:00 mtcap chat[31878]: ATDT*99***1#^M^M
2020-02-27T21:09:16.021103+00:00 mtcap chat[31878]: CONNECT
2020-02-27T21:09:16.023572+00:00 mtcap chat[31878]: -- got it
2020-02-27T21:09:16.028474+00:00 mtcap pppd[4222]: Script ppp_pre_chat -c -a "chap" && chat -v -t 20 -f /var/run/config/ppp_chat finished (pid 31583), status = 0x0
2020-02-27T21:09:16.028942+00:00 mtcap pppd[4222]: Serial connection established.
2020-02-27T21:09:16.038470+00:00 mtcap pppd[4222]: using channel 14
2020-02-27T21:09:16.048113+00:00 mtcap pppd[4222]: Using interface ppp0
2020-02-27T21:09:16.052326+00:00 mtcap pppd[4222]: Connect: ppp0 <--> /dev/modem_at0
.
.
.
2020-02-27T21:09:17.029006+00:00 mtcap pppd[4222]: rcvd [CHAP Success id=0x1 ""]
2020-02-27T21:09:17.038780+00:00 mtcap pppd[4222]: CHAP authentication succeeded
2020-02-27T21:09:17.039271+00:00 mtcap pppd[4222]: CHAP authentication succeeded
2020-02-27T21:09:17.041228+00:00 mtcap pppd[4222]: sent [IPCP ConfReq id=0x29 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
2020-02-27T21:09:17.698690+00:00 mtcap pppd[4222]: rcvd [IPCP ConfReq id=0x1a]
2020-02-27T21:09:17.700110+00:00 mtcap pppd[4222]: sent [IPCP ConfNak id=0x1a <addr 0.0.0.0>]
2020-02-27T21:09:17.702289+00:00 mtcap pppd[4222]: rcvd [IPCP ConfRej id=0x29 <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
2020-02-27T21:09:17.703677+00:00 mtcap pppd[4222]: sent [IPCP ConfReq id=0x2a <addr 0.0.0.0>]
2020-02-27T21:09:17.705189+00:00 mtcap pppd[4222]: rcvd [IPCP ConfReq id=0x1b]
2020-02-27T21:09:17.706655+00:00 mtcap pppd[4222]: sent [IPCP ConfAck id=0x1b]
2020-02-27T21:09:17.708332+00:00 mtcap pppd[4222]: rcvd [IPCP ConfNak id=0x2a <addr 172.31.1.17>]
2020-02-27T21:09:17.710568+00:00 mtcap pppd[4222]: sent [IPCP ConfReq id=0x2b <addr 172.31.1.17>]
2020-02-27T21:09:17.712532+00:00 mtcap pppd[4222]: rcvd [IPCP ConfAck id=0x2b <addr 172.31.1.17>]
2020-02-27T21:09:17.753534+00:00 mtcap pppd[4222]: local IP address 172.31.1.17


[Jeff Hatch]

Hello,

Normally the registration is complete by the time the check you see in the log is done. The delay is being caused either due to the Telit Cellular radio, Cellular signal quality or the provider side.

The mPower code waits 10s between checks for successful registration by the radio. Registration with the network is taking ~2 minutes to complete in this case. I am in America, but in my experience registration does usually only take around one to three seconds. In my experience, the behavior you’re seeing is probably something signal or network related.

If you need additional assistance with this, I would recommend contacting Multitech support at https://support.multitech.com

Jeff

[Author]

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