Patent ID: 11949721
Assignee: APPLE INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A device in a wireless communications system, the device comprising:
a Mobile Termination circuit (MT) to provide modem functionality for communications with other devices; and
a Terminal Equipment circuit (TE) to provide application and user interface functionality, the TE connected to the MT using a Terminal Adaptor (TA) that provides an interface for exchange of attention (AT) commands and AT command responses between the TE and the MT, wherein the TE is configured to perform operations comprising:
receiving, from the MT, a request AT command for an incoming multimedia call from a second device acting as an endpoint for the multimedia call to be established with the TE, the request AT command specifying a plurality of types of media proposed to be used for the incoming multimedia call; and
upon receiving the request AT command, sending an AT command response to the MT, the AT command response including instructions to (i) reject at least one type of media of the plurality of types of media and (ii) indicate acceptance of at least one other type of media of the plurality of types of media specified by the request AT command to be used for the incoming multimedia call.