Differences

This shows you the differences between two versions of the page.

--- venus-os:gx-gsm [2019-10-03 13:48] – [5. Trouble shooting] mvader
+++ venus-os:gx-gsm [2019-10-03 20:54] – Accessory section linked krenzke
@@ Line 25: / Line 25: @@
   * GSM900200100 - Active GPS Antenna for GX GSM
-See bottom of this manual for photos and specs of both optional antennas.
+[[venus-os:gx-gsm#accessory_antennas|See bottom of this manual for photos and specs of both optional antennas.]]
 ==== Compatibility ====
@@ Line 78: / Line 78: @@
 | {{:venus-os:gsm-status-roaming.png?nolink&27|}}           | Roaming, only informative. To use internet connection while roaming it needs to be enabled in \\ Settings -> GSM modem -> Allow roaming. |
-===== 6. GPS =====
+===== 5. GPS =====
 When the optional antenna is added; the position will be visible like this:
@@ Line 87: / Line 87: @@
-===== 5. Trouble shooting =====
+===== 6. Trouble shooting =====
 Whilst usually working well, in case the modem does not connect to the internet it can one of many reasons. Carefully go through each step of this trouble shooting guide, starting at the first.
@@ Line 97: / Line 97: @@
 | 4 | Signal strength | 1 bar minimum for VRM logging, 2 or 3 bars are necessary for a working remote console |
 | 5 | Carrier registration | Check that a name of a Cellular provider is visible in the "Carrier" field. If it is not, check signal strength and otherwise contact your simcard provider and/or insert the simcard in a phone to double check its operation and subscription status. |
-| 6 | Internet connection | Verify that the Internet shows "Online". Reasons for the system to not go "Online" whilst properly registered on the Network are: 1) APN not configured, contact the network operator for details. 2) The network is a different one than the home network (ie. roaming), and the setting to permit Roaming is disabled. 3)  Signal strength is strong enough to register on the network, but not to open the data connection to the internet. 4) The GX Device is already connected to Ethernet or WiFi: they have priority over the cellular connection.  |
+| 6 | Internet connection | Verify that the Internet shows "Online". Reasons for the system to not go "Online" whilst properly registered on the Network are: 1) APN not configured, contact the network operator for details. 2) The network is a different one than the home network (ie. roaming), and the setting to permit Roaming is disabled. 3)  Signal strength is strong enough to register on the network, but not to open the data connection to the internet. |
 | 7 | Connection to VRM Portal | Verify that the VRM Portal menu shows a recent last connection time. See Settings -> VRM Portal. For more details, see [[https://www.victronenergy.com/live/ccgx:start#trouble_shooting_data_logging|the VRM Connection troubleshooting chapter of the GX Manual]]. |
 An outdoor antenna typically increases received signal by 15 dB to 25 dB.
+Note that when the GX Device is already connected to Ethernet or WiFi, these have priority over the cellular connection. Even when the available Ethernet  or WiFi connection does **not** have a good connection to the internet. There is **no** automatic detection in place which in such case switches over to the GX GSM. In more technical language: when the cellular data connection is active, it is configured with a high routing metric. This way, the Linux kernel prioritises Ethernet or Wifi when these are available.
 This screenshot shows how all details look when everything is OK:
 {{:venus-os:gsm-settings-full.png?direct&480|}}
-===== 6. Supported Frequencies (2G/3G) =====
+===== 7. Supported Frequencies (2G/3G) =====
   * 2G (GSM/GPRS/EDGE): 850/900/1800/1900 MHz (Quad-Band)
@@ Line 117: / Line 119: @@
 In case of uncertainty please double-check: [[https://www.worldtimezone.com/gsm.html|GSM World Coverage Map]]
-===== 7. Technical Data =====
+===== 8. Technical Data =====
 ^ Outer dimensions (LxWxH) | 106x42.5x22 mm ([[https://www.victronenergy.de/upload/documents/GX-GSM-Dimensions.pdf|Drawing]]) |
@@ Line 127: / Line 129: @@
 ^ SIM card | Regular Mini SIM |
-===== 8. Accessory / Antennas =====
+===== 9. Accessory / Antennas =====
 ==== Outdoor 2G and 3G GSM Antenna ====
 {{:venus-os:gsm900100100.png?nolink&250 |}}