FOREWORD [HANDS-FREE TELEPHONE (HF/TEL) SYSTEM]
No.1 HANDS-FREE TELEPHONE SYSTEM DOES NOT RECEIVE/TRANSMIT CALLS, DOES NOT CONNECT [HANDS-FREE TELEPHONE (HF/TEL) SYSTEM]
No.2 CALLER'S VOICE VOLUME TOO LOW, OR NOISE INTERRUPTS CALL [HANDS-FREE TELEPHONE (HF/TEL) SYSTEM]
No.3 ADDRESSEE'S VOICE VOLUME TOO LOW, OR NOISE INTERRUPTS CALL [HANDS-FREE TELEPHONE (HF/TEL) SYSTEM]