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GSM channel (SMS)

Use the GSM channel to connect directly to a GSM device.

Find more information about channels in general here.

GSM channels are used to send and receive a low to medium volume of SMS messages. The number of simultaneous GSM channels depends on the license tier of your Auron Omni subscription.

Edit GSM channel

Edit GSM channel

Tools

The last page of the GSM channel wizard contains a GSM toolset for diagnostics and maintenance of your GSM device.

Edit GSM channel - Tools

Edit GSM channel – Tools

On this page you can check the signal of the GSM device and connect to it directly to issue AT or USSD commands.

This is especially useful for updating prepaid SIM cards or retrieving information from your provider without removing the SIM from the device.

To use the Tools page, the device must be disabled. Only one application can connect to a GSM device at a time.

Settings

The following settings are available:

Property Description
Connection Select the GSM device to connect to. This can be:

  • COM device. A COM port is listed
  • Windows TAPI device. A TAPI device name is listed
  • IP GSM. Use host, port, and TCP mode

For IP GSM, the device connects over TCP or IP. Specify the hostname, port number, and TCP mode. The TCP mode can be:

  • Raw. This is the most common option
  • Telnet. Use this when the serial to TCP terminal sends NVT commands
  • Telnet with COM control. Use this when the serial to TCP terminal expects Auron Omni to configure COM settings through NVT commands
PIN The PIN code used if the SIM is protected.
Inter character delay Time in milliseconds to wait before sending the next character in the GSM protocol.
Inter command delay Time in milliseconds to wait before sending the next GSM command.
Command timeout Maximum time in milliseconds to wait for a response from the GSM device.
From Address The phone number of the GSM device. This is used as the sender address for outgoing SMS messages.
Message storage Defines where SMS messages are stored when received from the telecom operator. This depends on the GSM device.
Basic devices only store messages on the SIM card. Advanced devices also store messages in device memory.
Auron Omni can read messages from:

  • ALL Use all storage modes. Attempts to read from SM, ME, and MT. Duplicates are removed
  • SM Retrieve messages from the SIM card
  • ME Retrieve messages from device memory
  • MT Combined storage. Returns messages from both SM and ME
Report storage Defines where delivery reports are stored when received. Some devices do not support report storage.
Available options:

  • ALL Retrieve reports from all storage modes. Attempts SM, ME, MT, and SR
  • SM Retrieve reports from the SIM card
  • ME Retrieve reports from device memory
  • MT Combined storage
  • SR Retrieve reports from dedicated status report memory. Not all devices support this
Large messages Defines how messages longer than 160 characters are handled:

  • Truncate messages longer than 160 characters
  • Send as multipart messages. Each part is sent separately and combined on the receiving device
  • Do not send large messages
Connection Defines connection behavior:

  • Close after batch. Reinitializes the GSM device after each batch. Slightly slower but more stable on older devices
  • Keep open. Keeps the connection open. This is usually faster
Leave a copy on the device Keeps a copy of incoming SMS messages or reports on the device or SIM card. Note that storage can fill up, which prevents new messages from being received.
Request delivery report Always requests a delivery receipt for messages sent on this channel.
Assemble multipart SMS Automatically assembles multipart messages so Auron Omni receives a single combined message.
Extract application port Extracts the application port from SMS messages sent to a specific application. This information is added to the ToAddress field.
For example, a message sent to +3112345678 with port 1000 becomes +3112345678:1000.
If disabled, the message remains binary and the UDH stays part of the message.
Use SMSC receive time Uses the receive time from the SMSC instead of the time recorded by the GSM channel.
Init string Allows a custom initialization string with additional AT commands executed after connecting to the modem.
Init string timeout Maximum time in seconds to wait for the initialization string to complete.
Wait for device to register Waits for the GSM device to register on the network before sending or receiving messages. Disabling this may cause initial messages to fail.
Network timeout Maximum time in seconds to wait for the device to register on the network.
Report timeout Maximum time in seconds to wait for a delivery report after sending a message.
Check interval Interval in seconds for checking the GSM modem for new messages.
Receive timeout Maximum time in seconds to wait for a receive operation to complete.
Multipart timeout Maximum time in seconds to wait for all parts of a multipart message. If not all parts arrive in time, available parts are combined and marked with “**Part Missing**”.
Send interval Time in milliseconds to wait before sending the next message in a batch.
Send timeout Maximum time in milliseconds to wait for confirmation that a message was sent.
Encoding The default character encoding. This can be GSM or Unicode.
Language Select the default language page for GSM encoding.