| Level | Code | Display | Definition |
| 1 | data | data |
Description: This device can receive data calls (i.e. modem).
|
| 1 | fax | fax |
Description: This device can receive faxes.
|
| 1 | sms | sms |
Description: This device can receive SMS messages.
|
| 1 | tty | text |
Description: This device is a text telephone.
|
| 1 | voice | voice |
Description: This device can receive voice calls (i.e. talking to another person, or a recording device, or a voice activated computer).
|