Start Four-Way Intercom
You can have four-way conference intercom with three other SMH10 users by adding one more intercom participant to the three-way intercom. While you are having three-way intercom as specified in section 14.1, a new participant (D), who is an intercom friend of your intercom friend (C), may join the conference intercom by making an intercom call to your intercom friend (C). Please note that in this case, the new participant (D) is an intercom friend of (C), not of you (A).
End Four-way Intercom
As same in the case of three-way intercom, you can completely get out of the four-way conference intercom or just disconnect a single intercom connection.
1. Press the Jog Dial for 1 second until you hear a beep to terminate four-way conference intercom. It terminates the intercom connections between you (A), and your intercom friends (B), (C) and (D).
2. Tap or double tap the Jog Dial to disconnect the intercom connection with one of the two intercom friends accordingly. However, when you disconnect the second friend (C) by double tapping the Jog Dial, you will be disconnected with the third participant (D) as well. This is because the third participant (D) is connected with you via the second friend (C).