You can set specific incoming Intercom call features on the 57i IP phone using the Aastra Web UI. The following table describes these features.
| Incoming Intercom | 
 | 
| Features in | Description | 
| Aastra Web UI | |
| Microphone Mute | Allows you to enable or disable the microphone on the | 
| 
 | IP phone for Intercom calls made by the originating | 
| 
 | caller. | 
| Auto Answer | Allows you to enable or disable the IP phone to | 
| 
 | automatically answer an Intercom call. If  | 
| 
 | enabled on the IP phone, the phone plays a tone (if | 
| 
 | "Play Warning Tone" is enabled) to alert the user | 
| 
 | before answering the intercom call. If  | 
| 
 | disabled, the phone rejects the incoming intercom call | 
| 
 | and sends a busy signal to the caller. | 
| Play Warning Tone | Allows you to enable or disable a warning tone to play | 
| 
 | when the phone receives an incoming intercom call on | 
| 
 | an active line. | 
| Allow Barge In | Allows you to enable or disable how the phone handles | 
| 
 | incoming intercom calls while the phone is on an active | 
| 
 | call. | 
For more information about the incoming Intercom features and for procedures on setting these features, see "Incoming Intercom Call Features" on page 174.
Making Calls
| Model 57i IP Phone User Guide | 117 | 
