User manual NEC DTH-1-1

[. . . ] The product may fall, causing serious damage to the product. Slots and openings in the cabinet and the back or bottom are provided for ventilation. To protect it from overheating, these openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. [. . . ] If the DTH-1-1 (BK) TEL is connected to the Telephone Network, you can "Disconnect and Recall" by pressing the FLASH Key. VOLUME CONTROL The handset earpiece volume can be adjusted in 6 stepped increments during a call. Press p to increase the volume (3 steps up), or q to decrease the volume (2 steps down). USER GUIDE MEMORY DTH-1-1 (BK) TEL DTH-1-1 (BK) TEL has 4 One-Touch Speed Dial Memory Keys. Once a number has been stored in a Memory location, you only have to go off-hook and press one button to make the call. Storing One-Touch Speed Dial Memory Keys. Lift Handset and press MUTE (ignore anything you hear in the earpiece). Select a location by pressing the corresponding Speed Dial key. Enter the telephone number to be stored (up to 21 digits) using the number keys. Press MUTE again and replace the handset. Note : Flash can be stored in memory dial, but will count as one of the total 21 digits allowed. Lift the handset and wait for a dial tone. Dial the desired number by pressing the corresponding Memory Key. Note : If you disconnect the phone from the network, One-Touch memories will be erased in a few hours. MESSAGE WAITING INDICATOR Many PBX systems have a feature called Message Waiting. DTH-1-1 (BK) TEL will show if a message was received in your absence by flashing the Message Waiting Indicator. This function operates differently depending on the PBX / KTS being used. Please contact the system administrator for more information. HANDSET MIC MUTE 1. While on a call, press MUTE Key to mute. Press MUTE Key again to resume conversation. USER GUIDE LAST NUMBER REDIAL 1. Press REDIAL Key to dial the last # dialed. DTH-1-1 (BK) TEL Note : If you disconnect the phone from the network, redial memory will be erased in a few hours. WALL MOUNTING The DTH-1-1 (BK) TEL is suitable for wall mounting. Check for hidden cables, water pipes, etc. Before you commence, check that the intended mounting point is within reach of a Telephone Socket. Use the template to mark the position of the two screws (not supplied) which will secure the DTH-1-1 (BK) TEL in position. Fit the screws (not supplied) to the wall, leaving 3. 3 mm sticking out (use wall anchors if necessary, not supplied). [. . . ] The certification means that the equipment meets certain telecommunication network protective operational and safety requirements. Industry Canada does not guarantee the equipment will operate to the user's satisfaction. " "Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company's inside wiring associated with a single line individual service may be extended by means of a certified connector assembly (telephone extension cord). [. . . ]