Configure cellular modem

Configuring the EX15-PR's cellular modem involves configuring the following items:

Required configuration items

Enable the cellular modem.
The cellular modem is enabled by default.
Configure the criteria used to determine which modem this modem configuration applies to.
Determine the SIM slot that will be used when connecting to the cellular network.
Configure the maximum number of interfaces that can use the modem.
Enable carrier switching, which allows the modem to automatically match the carrier for the active SIM.
Carrier switching is enabled by default.
Configure the access technology.
Determine which cellular antennas to use.

Additional configuration items

If Active SIM slot is set to Any, by default the device uses the SIM slot that was last used or was operational. As an alternative, you can specify a preferred SIM slot.

In the event of a failover to a non-preferred SIM, or if manual SIM switching is used to switch to a non-preferred SIM, the modem will attempt to reconnect to the SIM in the preferred SIM slot.

To configure the modem:

 Web

Log into Digi Remote Manager, or log into the local Web UI as a user with full Admin access rights.
Access the device configuration:
Remote Manager:
1. Locate your device as described in Use Digi Remote Manager to view and manage your device.
2. Click the Device ID.
3. Click Settings.
4. Click to expand Config.
Local Web UI:
1. On the menu, click System. Under Configuration, click Device Configuration.
  The Configuration window is displayed.
For single-cellular models, click Network > Modems > WWAN cellular modem or Modem.
Click Network > Modems > Modem.
Modem configurations are enabled by default. Click to toggle Enable to off to disable.
For Match modem by, select the matching criteria used to determine if this modem configuration applies to the currently attached modem:
- Any modem: Applies this configuration to any modem that is attached.
- IMEI: Applies this configuration only to a modem that matches the identified IMEI.
  - If IMEI is selected, for Match IMEI, type the IMEI of the modem that this configuration should be applied to.
- Port: Applies this configuration to a modem attached to the identified physical port.
  - If Port is selected, for Match Port, select the modem's port.
The default is Any modem.
The Active SIM slot selection is used to determine which SIM slot the modem will attempt to connect with. For Active SIM slot, select one of the following options:
- Any: Use the SIM slot that was last used or was last operational. The default is Any.
- SIM1: Only use SIM slot 1 with the modem
- SIM2: Only use SIM slot 2 with the modem
If you set the Active SIM slot to Any, the Preferred SIM slot option displays. Options for Preferred SIM slot are:
- None: The modem attempts to connect to the SIM in the SIM slot that was last used or was last operational. None is the default.
- SIM slot: Select the SIM slot that should be considered the preferred slot for this modem. If a preferred SIM is configured, the Preferred SIM slot check schedule displays in the configuration settings. In the event of a SIM failover, or if manual SIM switching is used to switch SIM slots, the modem attempts to reconnect to the preferred SIM at the interval or schedule configured in the Preferred SIM slot check schedule settings. The default, if a Preferred SIM slot is selected, is to check once per hour.

For Maximum number of interfaces, type the number of interfaces that can be configured to use this modem. This is used when using dual-APN SIMs. The default is 1.
For Signal strength query interval, type or select the amount of time the system waits before polling the modem for signal information.
Allowed values are any number of weeks, days, hours, minutes, or seconds, and take the format number{w|d|h|m|s}.
For example, to set Signal strength query interval to ten minutes, enter 10m or 600s.
The default is 30s.
Enable Carrier switching to allow the modem to automatically match the carrier for the active SIM. Carrier switching is enabled by default.
For Access technology, select the type of cellular technology that this modem should use to access the cellular network, or select All technologies to configure the modem to use the best available technology. The default is All technologies.
For Antennas, select whether the modem should use the main antenna, the auxiliary antenna, or both the main and auxiliary antennas.
Click Apply to save the configuration and apply the change.

 Command line

Select the device in Remote Manager and click Actions > Open Console, or log into the EX15-PR local command line as a user with full Admin access rights.
Depending on your device configuration, you may be presented with an Access selection menu. Type admin to access the Admin CLI.
At the command line, type config to enter configuration mode:
```
> config
(config)>
```
Modem configurations are enabled by default. To disable:
```
(config)> network modem modem enable false
(config)>
```
Set the matching criteria used to determine if this modem configuration applies to the currently attached modem:
```
(config)> network modem modem match value
(config)>
```
where value is one of the following:
- any: Applies this configuration to any modem that is attached.
- imei: Applies this configuration only to a modem that matches the identified IMEI.
  - If imei is used, set the IMEI of the modem that this configuration should be applied to:
```
(config)> network modem modem imei value
(config)>
```
    where value is the IMEI of the modem.
- port: Applies this configuration to a modem attached to the identified physical port.
  - If port is used, set modem's port:
    1. Determine available ports and correct syntax by using the ?:
```
(config)> network modem modem port ?

Match port: The physical port that the modem device is attached to.
Format:
    /device/usb/modem/module
Default value: /device/usb/modem/module
Current value: /device/usb/modem/module

(config)> network modem modem port
```
    2. Set the port:
```
(config)> network modem modem port /device/usb/modem/module
(config)>
```
  The default is any.
Set the SIM slot that should be used by the modem:
```
(config)> network modem modem sim_slot value
(config)>
```
where value is one of the following:
- any: Uses either SIM slot.
- 1: Uses the first SIM slot.
- 2. Uses the second SIM slot.
The default is any.
If sim_slot is set to any, set the SIM slot that should be considered the preferred slot for this modem:
```
(config)> network modem modem sim_slot_preference value
(config)>
```
where value is one of the following:
- none: Does not consider either SIM slot to be the preferred slot.
- 1: Configures the first SIM slot as the preferred SIM slot.
- 2. Configures the second SIM slot as the preferred SIM slot.
In the event of a failover to a non-preferred SIM, or if manual SIM switching is used to switch to a non-preferred SIM, the modem will attempt to reconnect to the SIM in the preferred SIM slot. The default is none.
Set the amount of time the system waits before polling the modem for signal information:
```
(config)> network modem modem query_interval value
(config)>
```
where value is any number of weeks, days, hours, minutes, or seconds, and takes the format number{w|d|h|m|s}.
For example, to set query_interval to ten minutes, enter either 10m or 600s:
```
(config)> network modem wan query_interval  600s
(config)> 
```
The default is 30s.
Set the maximum number of interfaces. This is used when using dual-APN SIMs. The default is 1.
```
(config)> network modem modem max_intfs int
(config)>
```
Carrier switching allows the modem to automatically match the carrier for the active SIM. Carrier switching is enabled by default. To disable:
```
(config)> network modem modem carrier_switch false
(config)>
```

Set the type of cellular technology that this modem should use to access the cellular network:

(config)> network modem modem access_tech value
(config)>

Available options for value vary depending on the modem type. To determine available options:

(config)> network modem modem access_tech ?

Access technology: The cellular network technology that the modem may use.
Format:
    2G
    3G
    4G
    4GM
    4GT
    all
Default value: all
Current value: all

(config)>

The default is all, which uses the best available technology.

Set whether the modem should use the main antenna, the auxiliary antenna, or both the main and auxiliary antennas:
```
(config)> network modem modem antenna value
(config)>
```
where value is one of the following:
- main
- aux
- both
Save the configuration and apply the change
```
(config)> save
Configuration saved.
>
```
Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection menu. Type quit to disconnect from the device.