Carriers are required only when you are using an SMTP gateway.

Carrier properties set up public wireless carrier configuration, which provides carrier-specific information such as how to map automatically-tracked phone numbers and network providers to SMS email addresses.

Carrier information is used when the device tracker gateway needs an SMS email address to be generated from an automatically-tracked device address. Addresses are generated in the following form:

email-address =
  sms_email_user_prefixphone-number@sms_email_domain

where:

See also

• sms_email_domain property
• sms_email_user_prefix property
• ml_device_address

For more information about carriers, see Gateways and carriers.

For more information about setting properties, see Setting properties.