A signaling system having an equalizing transmitter and equalizing receiver. The system includes an annuloplasty ring, which includes a sleeve having a lumen, and at least one anchor, shaped so as to define a coupling head and a tissue coupling element, which tissue coupling element is shaped so as to define a longitudinal axis, and is configured to penetrate cardiac tissue of the subject in a direction parallel to the longitudinal axis. The method can also comprise storing said modified form in response to user command. When the personal computer acquires Bluetooth device names of the cellular phone and PDA with intra-piconet synchronization established between the cellular phone and the PDA, the personal computer identifies the cellular phone as a communication partner based on the Bluetooth device names already notified of as the card ID.