Subscribe or unsubscribe to a scheduled group call
 Method schema is available as of layer 127. Switch »
| Name | Type | Description | 
|---|---|---|
| call | InputGroupCall | Scheduled group call | 
| subscribed | Bool | Enable or disable subscription | 
| Code | Type | Description | 
|---|---|---|
| 403 | GROUPCALL_ALREADY_STARTED | The groupcall has already started, you can join directly using phone.joinGroupCall. | 
| 400 | GROUPCALL_INVALID | The specified group call is invalid. | 
Join a group call