Hello,
I use the great OpenWrt 18.06.4 with my D-Link DWR-921 C1 and installed and set it up as described on the corresponding page:
https://openwrt.org/toh/d-link/d-link_dwr-921
I connect to the internet via lte. Until now I used O2 lte, working for weeks without any problems. I would like to use Vodafone in Germany, because where I want to place the router at a holiday home, no O2 is available. Unfortunately I only get lte internet connections with an O2 SIM card (O2 network) or with a Telekom SIM Card (D1 network). As soon as I use the Vodafone SIM card (D2 network) I do not get any connections at all to the lte network. It is not an IP issue, I just do not get a connection.
I re-checked the Vodafone SIM card. It works fine with my smartphone and lte, located next to the router. Following the QMI guide, using uqmi I get the following outputs:
# uqmi -d /dev/cdc-wdm0 --get-data-status
"disconnected"
# uqmi -d /dev/cdc-wdm0 --get-signal-info
{
"type": "lte",
"rssi": -81,
"rsrq": -7,
"rsrp": -105,
"snr": 178
}
I know, not the best values, however my smartphone gets a connection.
With O2 or Telekom SIM the connection is already established, if I use "ifup wwan". But it doesn’t with Vodafone SIM.
I get a „Call failed“ If I connect with
# uqmi -d /dev/cdc-wdm0 --start-network --apn event.vodafone.de --autoconnect
"Call failed"
My uci interface setup is at follows
# uci show network.wwan
network.wwan=interface
network.wwan.apn='event.vodafonde.de'
network.wwan.device='/dev/cdc-wdm0'
network.wwan.proto='wwan
network.wwan.auto='0'
Do you have any ideas, why the Vodafone LTE does not work here, but the other mobile networks do? Are there any differences between the networks that could play a role here (hardware issue)? Or could this be related to my OpenWRT configuration? Is there anything that I could check or configure in another way? After two evenings without any solution and again and again "Call failed" I have no idea anymore.
Best regards,
Philipp