Google Inc.

Amruth Ramachandran

Chinmay Dhodapkar

Shivank Nayak

David J Krause

Radhika Agrawal

Jayachandran Chinnakkannu

This document describes techniques and devices for exchanging status messages during a call. Techniques described herein utilize a computing device to establish a real-time person-to-person media session (e.g., a call) with another device through a wireless communication network. Through the wireless communication network, the computing device may perform a handshake procedure to determine whether the other device supports an exchange of status messages during the media session. If supported by both devices, the computing device may exchange status messages using, for instance. Real-Time Transport Protocol (RTP) header extensions and/or unused dual-tone multi-frequency (DTMF) digits (e.g., digits A, B, C, or D).

Exchanging status messages during a call

A user equipment includes a radio frequency (RF) modem configured to wirelessly communicate with at least one mobile network operator and a wireless local area network (WLAN) modem configured to wirelessly communicate with at least one WLAN access point. The user equipment further includes a processor coupled to the RF modem and the WLAN modem and at least one memory storing executable instructions. The executable instructions are configured to manipulate at least one of the processor and the RF modem to establish a first cellular connection with a first mobile network operator based on a first subscription represented by a first subscriber identity, and virtualize the first cellular connection as a wireless local area network (WLAN) connection for use by one or more processes executed by the processor for a second subscription represented by a second subscriber identity.

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Cupertino, CA, United States of America

Amruth Ramachandran